diff --git a/AntennaTracker/Parameters.cpp b/AntennaTracker/Parameters.cpp
index 4eb3db11691f5..5be95dedf7dde 100644
--- a/AntennaTracker/Parameters.cpp
+++ b/AntennaTracker/Parameters.cpp
@@ -588,17 +588,17 @@ void Tracker::load_parameters(void)
 
 #if AP_STATS_ENABLED
     // PARAMETER_CONVERSION - Added: Jan-2024
-    AP_Param::convert_class(g.k_param_stats_old, &stats, stats.var_info, 0, 0, true);
+    AP_Param::convert_class(g.k_param_stats_old, &stats, stats.var_info, 0, true);
 #endif
 
 #if AP_SCRIPTING_ENABLED
     // PARAMETER_CONVERSION - Added: Jan-2024
-    AP_Param::convert_class(g.k_param_scripting_old, &scripting, scripting.var_info, 0, 0, true);
+    AP_Param::convert_class(g.k_param_scripting_old, &scripting, scripting.var_info, 0, true);
 #endif
 
     // PARAMETER_CONVERSION - Added: Feb-2024 for Tracker-4.6
 #if HAL_LOGGING_ENABLED
-    AP_Param::convert_class(g.k_param_logger, &logger, logger.var_info, 0, 0, true);
+    AP_Param::convert_class(g.k_param_logger, &logger, logger.var_info, 0, true);
 #endif
 
 #if HAL_HAVE_SAFETY_SWITCH
diff --git a/ArduCopter/Parameters.cpp b/ArduCopter/Parameters.cpp
index fcde858fc4b6d..8a1cec0c3ab00 100644
--- a/ArduCopter/Parameters.cpp
+++ b/ArduCopter/Parameters.cpp
@@ -1354,56 +1354,29 @@ void Copter::load_parameters(void)
 
     // PARAMETER_CONVERSION - Added: Mar-2022
 #if AP_FENCE_ENABLED
-    AP_Param::convert_class(g.k_param_fence_old, &fence, fence.var_info, 0, 0, true);
+    AP_Param::convert_class(g.k_param_fence_old, &fence, fence.var_info, 0, true);
 #endif
 
-    // PARAMETER_CONVERSION - Added: Jan-2024 for Copter-4.6
+    static const AP_Param::G2ObjectConversion g2_conversions[] {
 #if AP_STATS_ENABLED
-    {
-        // Find G2's Top Level Key
-        AP_Param::ConversionInfo info;
-        if (!AP_Param::find_top_level_key_by_pointer(&g2, info.old_key)) {
-            return;
-        }
-
-        const uint16_t old_index = 12;       // Old parameter index in g2
-        const uint16_t old_top_element = 4044; // Old group element in the tree for the first subgroup element (see AP_PARAM_KEY_DUMP)
-        AP_Param::convert_class(info.old_key, &stats, stats.var_info, old_index, old_top_element, false);
-    }
-#endif
     // PARAMETER_CONVERSION - Added: Jan-2024 for Copter-4.6
+        { &stats, stats.var_info, 12 },
+#endif
 #if AP_SCRIPTING_ENABLED
-    {
-        // Find G2's Top Level Key
-        AP_Param::ConversionInfo info;
-        if (!AP_Param::find_top_level_key_by_pointer(&g2, info.old_key)) {
-            return;
-        }
-
-        const uint16_t old_index = 30;       // Old parameter index in g2
-        const uint16_t old_top_element = 94; // Old group element in the tree for the first subgroup element (see AP_PARAM_KEY_DUMP)
-        AP_Param::convert_class(info.old_key, &scripting, scripting.var_info, old_index, old_top_element, false);
-    }
+    // PARAMETER_CONVERSION - Added: Jan-2024 for Copter-4.6
+        { &scripting, scripting.var_info, 30 },
 #endif
-
+#if AP_GRIPPER_ENABLED
     // PARAMETER_CONVERSION - Added: Feb-2024 for Copter-4.6
-#if HAL_LOGGING_ENABLED
-    AP_Param::convert_class(g.k_param_logger, &logger, logger.var_info, 0, 0, true);
+        { &gripper, gripper.var_info, 13 },
 #endif
+    };
 
-    // PARAMETER_CONVERSION - Added: Feb-2024 for Copter-4.6
-#if AP_GRIPPER_ENABLED
-    {
-        // Find G2's Top Level Key
-        AP_Param::ConversionInfo info;
-        if (!AP_Param::find_top_level_key_by_pointer(&g2, info.old_key)) {
-            return;
-        }
+    AP_Param::convert_g2_objects(&g2, g2_conversions, ARRAY_SIZE(g2_conversions));
 
-        const uint16_t old_index = 13;       // Old parameter index in g2
-        const uint16_t old_top_element = 4045; // Old group element in the tree for the first subgroup element (see AP_PARAM_KEY_DUMP)
-        AP_Param::convert_class(info.old_key, &gripper, gripper.var_info, old_index, old_top_element, false);
-    }
+    // PARAMETER_CONVERSION - Added: Feb-2024 for Copter-4.6
+#if HAL_LOGGING_ENABLED
+    AP_Param::convert_class(g.k_param_logger, &logger, logger.var_info, 0, true);
 #endif
 
     // setup AP_Param frame type flags
diff --git a/ArduPlane/Parameters.cpp b/ArduPlane/Parameters.cpp
index fe571b2b58293..b6db6ba4ae6f9 100644
--- a/ArduPlane/Parameters.cpp
+++ b/ArduPlane/Parameters.cpp
@@ -1468,29 +1468,12 @@ void Plane::load_parameters(void)
 
     g.use_reverse_thrust.convert_parameter_width(AP_PARAM_INT16);
 
-
-    // PARAMETER_CONVERSION - Added: Oct-2021
-#if HAL_EFI_ENABLED
-    {
-        // Find G2's Top Level Key
-        AP_Param::ConversionInfo info;
-        if (!AP_Param::find_top_level_key_by_pointer(&g2, info.old_key)) {
-            return;
-        }
-
-        const uint16_t old_index = 22;       // Old parameter index in g2
-        const uint16_t old_top_element = 86; // Old group element in the tree for the first subgroup element (see AP_PARAM_KEY_DUMP)
-        AP_Param::convert_class(info.old_key, &efi, efi.var_info, old_index, old_top_element, false);
-    }
-#endif
-
 #if AP_AIRSPEED_ENABLED
     // PARAMETER_CONVERSION - Added: Jan-2022
     {
         const uint16_t old_key = g.k_param_airspeed;
         const uint16_t old_index = 0;       // Old parameter index in the tree
-        const uint16_t old_top_element = 0; // Old group element in the tree for the first subgroup element (see AP_PARAM_KEY_DUMP)
-        AP_Param::convert_class(old_key, &airspeed, airspeed.var_info, old_index, old_top_element, true);
+        AP_Param::convert_class(old_key, &airspeed, airspeed.var_info, old_index, true);
     }
 #endif
 
@@ -1511,7 +1494,7 @@ void Plane::load_parameters(void)
     
     // PARAMETER_CONVERSION - Added: Mar-2022
 #if AP_FENCE_ENABLED
-    AP_Param::convert_class(g.k_param_fence, &fence, fence.var_info, 0, 0, true);
+    AP_Param::convert_class(g.k_param_fence, &fence, fence.var_info, 0, true);
 #endif
   
     // PARAMETER_CONVERSION - Added: Dec 2023
@@ -1527,52 +1510,29 @@ void Plane::load_parameters(void)
 
     landing.convert_parameters();
 
-    // PARAMETER_CONVERSION - Added: Jan-2024 for Plane-4.6
-#if AP_STATS_ENABLED
-    {
-        // Find G2's Top Level Key
-        AP_Param::ConversionInfo info;
-        if (!AP_Param::find_top_level_key_by_pointer(&g2, info.old_key)) {
-            return;
-        }
-
-        const uint16_t old_index = 5;       // Old parameter index in g2
-        const uint16_t old_top_element = 4037; // Old group element in the tree for the first subgroup element (see AP_PARAM_KEY_DUMP)
-        AP_Param::convert_class(info.old_key, &stats, stats.var_info, old_index, old_top_element, false);
-    }
+    static const AP_Param::G2ObjectConversion g2_conversions[] {
+    // PARAMETER_CONVERSION - Added: Oct-2021
+#if HAL_EFI_ENABLED
+        { &efi, efi.var_info, 22 },
 #endif
+#if AP_STATS_ENABLED
     // PARAMETER_CONVERSION - Added: Jan-2024 for Plane-4.6
+        { &stats, stats.var_info, 5 },
+#endif
 #if AP_SCRIPTING_ENABLED
-    {
-        // Find G2's Top Level Key
-        AP_Param::ConversionInfo info;
-        if (!AP_Param::find_top_level_key_by_pointer(&g2, info.old_key)) {
-            return;
-        }
-
-        const uint16_t old_index = 14;       // Old parameter index in g2
-        const uint16_t old_top_element = 78; // Old group element in the tree for the first subgroup element (see AP_PARAM_KEY_DUMP)
-        AP_Param::convert_class(info.old_key, &scripting, scripting.var_info, old_index, old_top_element, false);
-    }
+    // PARAMETER_CONVERSION - Added: Jan-2024 for Plane-4.6
+        { &scripting, scripting.var_info, 14 },
 #endif
-
-    // PARAMETER_CONVERSION - Added: Feb-2024 for Plane-4.6
 #if AP_GRIPPER_ENABLED
-    {
-        // Find G2's Top Level Key
-        AP_Param::ConversionInfo info;
-        if (!AP_Param::find_top_level_key_by_pointer(&g2, info.old_key)) {
-            return;
-        }
-
-        const uint16_t old_index = 12;       // Old parameter index in g2
-        const uint16_t old_top_element = 4044; // Old group element in the tree for the first subgroup element (see AP_PARAM_KEY_DUMP)
-        AP_Param::convert_class(info.old_key, &gripper, gripper.var_info, old_index, old_top_element, false);
-    }
+    // PARAMETER_CONVERSION - Added: Feb-2024 for Plane-4.6
+        { &gripper, gripper.var_info, 12 },
 #endif
+    };
+
+    AP_Param::convert_g2_objects(&g2, g2_conversions, ARRAY_SIZE(g2_conversions));
 
     // PARAMETER_CONVERSION - Added: Feb-2024 for Copter-4.6
 #if HAL_LOGGING_ENABLED
-    AP_Param::convert_class(g.k_param_logger, &logger, logger.var_info, 0, 0, true);
+    AP_Param::convert_class(g.k_param_logger, &logger, logger.var_info, 0, true);
 #endif
 }
diff --git a/ArduSub/Parameters.cpp b/ArduSub/Parameters.cpp
index 8d0fd2ef9792e..d10ffe1e18333 100644
--- a/ArduSub/Parameters.cpp
+++ b/ArduSub/Parameters.cpp
@@ -741,72 +741,35 @@ void Sub::load_parameters()
     // We should ignore this parameter since ROVs are neutral buoyancy
     AP_Param::set_by_name("MOT_THST_HOVER", 0.5);
 
-// PARAMETER_CONVERSION - Added: JAN-2022
-#if AP_AIRSPEED_ENABLED
-    // Find G2's Top Level Key
-    AP_Param::ConversionInfo info;
-    if (!AP_Param::find_top_level_key_by_pointer(&g2, info.old_key)) {
-        return;
-    }
-
-    const uint16_t old_index = 19;          // Old parameter index in the tree
-    const uint16_t old_top_element = 4051;  // Old group element in the tree for the first subgroup element
-    AP_Param::convert_class(info.old_key, &airspeed, airspeed.var_info, old_index, old_top_element, false);
-#endif
-
-
     // PARAMETER_CONVERSION - Added: Mar-2022
 #if AP_FENCE_ENABLED
-    AP_Param::convert_class(g.k_param_fence_old, &fence, fence.var_info, 0, 0, true);
+    AP_Param::convert_class(g.k_param_fence_old, &fence, fence.var_info, 0, true);
 #endif
 
-    // PARAMETER_CONVERSION - Added: Jan-2024
-#if AP_STATS_ENABLED
-    {
-        // Find G2's Top Level Key
-        AP_Param::ConversionInfo stats_info;
-        if (!AP_Param::find_top_level_key_by_pointer(&g2, stats_info.old_key)) {
-            return;
-        }
-
-        const uint16_t stats_old_index = 1;       // Old parameter index in g2
-        const uint16_t stats_old_top_element = 4033; // Old group element in the tree for the first subgroup element (see AP_PARAM_KEY_DUMP)
-        AP_Param::convert_class(stats_info.old_key, &stats, stats.var_info, stats_old_index, stats_old_top_element, false);
-    }
+    static const AP_Param::G2ObjectConversion g2_conversions[] {
+#if AP_AIRSPEED_ENABLED
+    // PARAMETER_CONVERSION - Added: JAN-2022
+        { &airspeed, airspeed.var_info, 19 },
 #endif
+#if AP_STATS_ENABLED
     // PARAMETER_CONVERSION - Added: Jan-2024
+        { &stats, stats.var_info, 1 },
+#endif
 #if AP_SCRIPTING_ENABLED
-    {
-        // Find G2's Top Level Key
-        AP_Param::ConversionInfo scripting_info;
-        if (!AP_Param::find_top_level_key_by_pointer(&g2, scripting_info.old_key)) {
-            return;
-        }
-
-        const uint16_t scripting_old_index = 18;       // Old parameter index in g2
-        const uint16_t scripting_old_top_element = 82; // Old group element in the tree for the first subgroup element (see AP_PARAM_KEY_DUMP)
-        AP_Param::convert_class(scripting_info.old_key, &scripting, scripting.var_info, scripting_old_index, scripting_old_top_element, false);
-    }
+    // PARAMETER_CONVERSION - Added: Jan-2024
+        { &scripting, scripting.var_info, 18 },
 #endif
-
-    // PARAMETER_CONVERSION - Added: Feb-2024
 #if AP_GRIPPER_ENABLED
-    {
-        // Find G2's Top Level Key
-        AP_Param::ConversionInfo gripper_info;
-        if (!AP_Param::find_top_level_key_by_pointer(&g2, gripper_info.old_key)) {
-            return;
-        }
-
-        const uint16_t old_gripper_index = 3;       // Old parameter index in g2
-        const uint16_t old_gripper_top_element = 4035; // Old group element in the tree for the first subgroup element (see AP_PARAM_KEY_DUMP)
-        AP_Param::convert_class(gripper_info.old_key, &gripper, gripper.var_info, old_gripper_index, old_gripper_top_element, false);
-    }
+    // PARAMETER_CONVERSION - Added: Feb-2024
+        { &gripper, gripper.var_info, 3 },
 #endif
+    };
+
+    AP_Param::convert_g2_objects(&g2, g2_conversions, ARRAY_SIZE(g2_conversions));
 
     // PARAMETER_CONVERSION - Added: Feb-2024
 #if HAL_LOGGING_ENABLED
-    AP_Param::convert_class(g.k_param_logger, &logger, logger.var_info, 0, 0, true);
+    AP_Param::convert_class(g.k_param_logger, &logger, logger.var_info, 0, true);
 #endif
 }
 
diff --git a/Blimp/Parameters.cpp b/Blimp/Parameters.cpp
index cbc14fc4101a2..f9f11e44f0066 100644
--- a/Blimp/Parameters.cpp
+++ b/Blimp/Parameters.cpp
@@ -842,38 +842,21 @@ void Blimp::load_parameters(void)
 {
     AP_Vehicle::load_parameters(g.format_version, Parameters::k_format_version);
 
-    // PARAMETER_CONVERSION - Added: Jan-2024 for Copter-4.6
+    static const AP_Param::G2ObjectConversion g2_conversions[] {
 #if AP_STATS_ENABLED
-    {
-        // Find G2's Top Level Key
-        AP_Param::ConversionInfo info;
-        if (!AP_Param::find_top_level_key_by_pointer(&g2, info.old_key)) {
-            return;
-        }
-
-        const uint16_t old_index = 12;       // Old parameter index in g2
-        const uint16_t old_top_element = 4044; // Old group element in the tree for the first subgroup element (see AP_PARAM_KEY_DUMP)
-        AP_Param::convert_class(info.old_key, &stats, stats.var_info, old_index, old_top_element, false);
-    }
-#endif
     // PARAMETER_CONVERSION - Added: Jan-2024 for Copter-4.6
+        { &stats, stats.var_info, 12 },
+#endif
 #if AP_SCRIPTING_ENABLED
-    {
-        // Find G2's Top Level Key
-        AP_Param::ConversionInfo info;
-        if (!AP_Param::find_top_level_key_by_pointer(&g2, info.old_key)) {
-            return;
-        }
-
-        const uint16_t old_index = 30;       // Old parameter index in g2
-        const uint16_t old_top_element = 94; // Old group element in the tree for the first subgroup element (see AP_PARAM_KEY_DUMP)
-        AP_Param::convert_class(info.old_key, &scripting, scripting.var_info, old_index, old_top_element, false);
-    }
+    // PARAMETER_CONVERSION - Added: Jan-2024 for Copter-4.6
+        { &scripting, scripting.var_info, 30 },
 #endif
+    };
+    AP_Param::convert_g2_objects(&g2, g2_conversions, ARRAY_SIZE(g2_conversions));
 
     // PARAMETER_CONVERSION - Added: Feb-2024
 #if HAL_LOGGING_ENABLED
-    AP_Param::convert_class(g.k_param_logger, &logger, logger.var_info, 0, 0, true);
+    AP_Param::convert_class(g.k_param_logger, &logger, logger.var_info, 0, true);
 #endif
 
     // setup AP_Param frame type flags
diff --git a/Rover/Parameters.cpp b/Rover/Parameters.cpp
index 7a4d0e312eb50..5f24887181c8c 100644
--- a/Rover/Parameters.cpp
+++ b/Rover/Parameters.cpp
@@ -875,70 +875,38 @@ void Rover::load_parameters(void)
     }
 #endif
 
-// PARAMETER_CONVERSION - Added: JAN-2022
+    static const AP_Param::G2ObjectConversion g2_conversions[] {
 #if AP_AIRSPEED_ENABLED
-    const uint16_t old_index = 37;          // Old parameter index in the tree
-    const uint16_t old_top_element = 4069;  // Old group element in the tree for the first subgroup element
-    AP_Param::convert_class(info.old_key, &airspeed, airspeed.var_info, old_index, old_top_element, false);
+// PARAMETER_CONVERSION - Added: JAN-2022
+        { &airspeed, airspeed.var_info, 37 },
 #endif
-
-// PARAMETER_CONVERSION - Added: MAR-2022
 #if AP_AIS_ENABLED
-    AP_Param::convert_class(info.old_key, &ais, ais.var_info, 50, 114, false);
+// PARAMETER_CONVERSION - Added: MAR-2022
+        { &ais, ais.var_info, 50 },
 #endif
-
-// PARAMETER_CONVERSION - Added: Mar-2022
 #if AP_FENCE_ENABLED
-    AP_Param::convert_class(info.old_key, &fence, fence.var_info, 17, 4049, false);
+// PARAMETER_CONVERSION - Added: Mar-2022
+        { &fence, fence.var_info, 17 },
 #endif
-
-    // PARAMETER_CONVERSION - Added: Jan-2024 for Rover-4.6
 #if AP_STATS_ENABLED
-    {
-        // Find G2's Top Level Key
-        AP_Param::ConversionInfo stats_info;
-        if (!AP_Param::find_top_level_key_by_pointer(&g2, stats_info.old_key)) {
-            return;
-        }
-
-        const uint16_t stats_old_index = 1;       // Old parameter index in g2
-        const uint16_t stats_old_top_element = 4033; // Old group element in the tree for the first subgroup element (see AP_PARAM_KEY_DUMP)
-        AP_Param::convert_class(stats_info.old_key, &stats, stats.var_info, stats_old_index, stats_old_top_element, false);
-    }
-#endif
     // PARAMETER_CONVERSION - Added: Jan-2024 for Rover-4.6
+        { &stats, stats.var_info, 1 },
+#endif
 #if AP_SCRIPTING_ENABLED
-    {
-        // Find G2's Top Level Key
-        AP_Param::ConversionInfo scripting_info;
-        if (!AP_Param::find_top_level_key_by_pointer(&g2, scripting_info.old_key)) {
-            return;
-        }
-
-        const uint16_t scripting_old_index = 41;       // Old parameter index in g2
-        const uint16_t scripting_old_top_element = 105; // Old group element in the tree for the first subgroup element (see AP_PARAM_KEY_DUMP)
-        AP_Param::convert_class(scripting_info.old_key, &scripting, scripting.var_info, scripting_old_index, scripting_old_top_element, false);
-    }
+    // PARAMETER_CONVERSION - Added: Jan-2024 for Rover-4.6
+        { &scripting, scripting.var_info, 41 },
 #endif
-
-    // PARAMETER_CONVERSION - Added: Feb-2024 for Copter-4.6
 #if AP_GRIPPER_ENABLED
-    {
-        // Find G2's Top Level Key
-        AP_Param::ConversionInfo gripper_info;
-        if (!AP_Param::find_top_level_key_by_pointer(&g2, gripper_info.old_key)) {
-            return;
-        }
-
-        const uint16_t gripper_old_index = 39;       // Old parameter index in g2
-        const uint16_t gripper_old_top_element = 4071; // Old group element in the tree for the first subgroup element (see AP_PARAM_KEY_DUMP)
-        AP_Param::convert_class(gripper_info.old_key, &gripper, gripper.var_info, gripper_old_index, gripper_old_top_element, false);
-    }
+    // PARAMETER_CONVERSION - Added: Feb-2024 for Copter-4.6
+        { &gripper, gripper.var_info, 39 },
 #endif
+    };
+
+    AP_Param::convert_g2_objects(&g2, g2_conversions, ARRAY_SIZE(g2_conversions));
 
     // PARAMETER_CONVERSION - Added: Feb-2024 for Rover-4.6
 #if HAL_LOGGING_ENABLED
-    AP_Param::convert_class(g.k_param_logger, &logger, logger.var_info, 0, 0, true);
+    AP_Param::convert_class(g.k_param_logger, &logger, logger.var_info, 0, true);
 #endif
 
 }
diff --git a/libraries/AP_Param/AP_Param.cpp b/libraries/AP_Param/AP_Param.cpp
index 996960a0b5819..cb313ed283cb6 100644
--- a/libraries/AP_Param/AP_Param.cpp
+++ b/libraries/AP_Param/AP_Param.cpp
@@ -2033,7 +2033,7 @@ void AP_Param::convert_old_parameters_scaled(const struct ConversionInfo *conver
 // is_top_level: Is true if the class had its own top level key, param_key. It is false if the class was a subgroup
 void AP_Param::convert_class(uint16_t param_key, void *object_pointer,
                                     const struct AP_Param::GroupInfo *group_info,
-                                    uint16_t old_index, uint16_t old_top_element, bool is_top_level)
+                                    uint16_t old_index, bool is_top_level)
 {
     const uint8_t group_shift = is_top_level ? 0 : 6;
 
@@ -2074,6 +2074,20 @@ void AP_Param::convert_class(uint16_t param_key, void *object_pointer,
     flush();
 }
 
+void AP_Param::convert_g2_objects(const void *g2, const G2ObjectConversion g2_conversions[], uint8_t num_conversions)
+{
+    // Find G2's Top Level Key
+    ConversionInfo info;
+    if (!find_top_level_key_by_pointer(g2, info.old_key)) {
+        return;
+    }
+    for (uint8_t i=0; i<num_conversions; i++) {
+        const auto &c { g2_conversions[i] };
+        convert_class(info.old_key, c.object_pointer, c.var_info, c.old_index, false);
+    }
+}
+
+
 /*
  convert width of a parameter, allowing update to wider scalar values
  without changing the parameter indexes
diff --git a/libraries/AP_Param/AP_Param.h b/libraries/AP_Param/AP_Param.h
index fa71c74686bad..2aeb19a8a28e6 100644
--- a/libraries/AP_Param/AP_Param.h
+++ b/libraries/AP_Param/AP_Param.h
@@ -472,6 +472,13 @@ class AP_Param
     // convert old vehicle parameters to new object parameters with scaling - assumes we use the same scaling factor for all values in the table
     static void         convert_old_parameters_scaled(const ConversionInfo *conversion_table, uint8_t table_size, float scaler, uint8_t flags);
 
+    struct G2ObjectConversion {
+        void *object_pointer;
+        const struct AP_Param::GroupInfo *var_info;
+        uint16_t old_index;  // Old parameter index in g
+    };
+    static void         convert_g2_objects(const void *g2, const G2ObjectConversion g2_conversions[], uint8_t num_conversions);
+
     /*
       convert width of a parameter, allowing update to wider scalar
       values without changing the parameter indexes. This will return
@@ -493,7 +500,7 @@ class AP_Param
     // is_top_level: Is true if the class had its own top level key, param_key. It is false if the class was a subgroup
     static void         convert_class(uint16_t param_key, void *object_pointer,
                                         const struct AP_Param::GroupInfo *group_info,
-                                        uint16_t old_index, uint16_t old_top_element, bool is_top_level);
+                                        uint16_t old_index, bool is_top_level);
 
     /*
       fetch a parameter value based on the index within a group. This