diff --git a/app/Plugins/User/Databases/DatabasesPlugin.php b/app/Plugins/User/Databases/DatabasesPlugin.php
index b3127c653..44577bbe6 100644
--- a/app/Plugins/User/Databases/DatabasesPlugin.php
+++ b/app/Plugins/User/Databases/DatabasesPlugin.php
@@ -1118,8 +1118,9 @@ public function detail($request, $page_id, $frame_id, $id, $mode = null)
      */
     public function input($request, $page_id, $frame_id, $id = null, $errors = null)
     {
-        // セッション初期化などのLaravel 処理。
-        // $request->flash();
+        // セッション初期化（戻る時に入力値を保持するため）
+        // 確認画面からの「前へ」ではアップロードファイルは含まれないため、flash可能。
+        $request->flash();
 
         // Databases、Frame データ
         $database = $this->getDatabases($frame_id);
diff --git a/resources/views/plugins/user/databases/default/databases_confirm.blade.php b/resources/views/plugins/user/databases/default/databases_confirm.blade.php
index 7d1912406..41ce9c958 100644
--- a/resources/views/plugins/user/databases/default/databases_confirm.blade.php
+++ b/resources/views/plugins/user/databases/default/databases_confirm.blade.php
@@ -46,6 +46,7 @@ function submit_databases_temporary() {
 
 <form action="" name="databases_store{{$frame_id}}" method="POST">
     {{ csrf_field() }}
+    <input type="hidden" name="frame_id" value="{{$frame_id}}">
     @foreach($databases_columns as $database_column)
 
         {{-- 入力しないカラム型は表示しない --}}
diff --git a/resources/views/plugins/user/databases/default/databases_input.blade.php b/resources/views/plugins/user/databases/default/databases_input.blade.php
index 8d31240b0..0ddff7c4d 100644
--- a/resources/views/plugins/user/databases/default/databases_input.blade.php
+++ b/resources/views/plugins/user/databases/default/databases_input.blade.php
@@ -90,10 +90,10 @@
         <div class="form-group row">
             <label class="col-sm-3 control-label">カテゴリ</label>
             <div class="col-sm-9">
-                <select class="form-control" name="categories_id" class="form-control @if ($errors && $errors->has('category')) border-danger @endif">
+                <select name="categories_id" class="form-control @if ($errors && $errors->has('categories_id')) border-danger @endif">
                     <option value=""></option>
                     @foreach($databases_categories as $category)
-                    <option value="{{$category->id}}" @if(old('category', $inputs->categories_id)==$category->id) selected="selected" @endif>{{$category->category}}</option>
+                    <option value="{{$category->id}}" @if(old('categories_id', $inputs->categories_id)==$category->id) selected="selected" @endif>{{$category->category}}</option>
                     @endforeach
                 </select>
                 @include('plugins.common.errors_inline', ['name' => 'categories_id'])
diff --git a/resources/views/plugins/user/databases/default/databases_input_checkbox.blade.php b/resources/views/plugins/user/databases/default/databases_input_checkbox.blade.php
index d42d2424e..7012527ba 100644
--- a/resources/views/plugins/user/databases/default/databases_input_checkbox.blade.php
+++ b/resources/views/plugins/user/databases/default/databases_input_checkbox.blade.php
@@ -13,47 +13,22 @@
         if (!empty($value_obj)) {
             $value = $value_obj->value;
         }
-
+        // 現在の選択値の決定（リクエスト優先 → old → 既存値分解）
+        $selected_values = [];
+        if (isset($request->databases_columns_value) &&
+            array_key_exists($database_obj->id, $request->databases_columns_value)) {
+            $selected_values = (array)$request->databases_columns_value[$database_obj->id];
+        } elseif (!is_null(old('databases_columns_value.' . $database_obj->id))) {
+            $selected_values = (array)old('databases_columns_value.' . $database_obj->id);
+        } elseif (!empty($value)) {
+            // 既存値は '|' 区切り
+            $selected_values = array_filter($value === '' ? [] : explode('|', $value), function($v){ return $v !== ''; });
+        }
     @endphp
     <div class="container-fluid row @if ($errors && $errors->has("databases_columns_value.$database_obj->id")) border border-danger @endif">
         @foreach($databases_columns_id_select[$database_obj->id] as $select)
-
-            @php
-            // チェック用変数
-            $column_checkbox_checked = "";
-
-            // old でチェックされていたもの
-            if (!empty(old('databases_columns_value.'.$database_obj->id))) {
-                foreach(old('databases_columns_value.'.$database_obj->id) as $old_value) {
-                    if ( $old_value == $select['value'] ) {
-                        $column_checkbox_checked = " checked";
-                    }
-                }
-            }
-
-            // 画面が戻ってきたもの
-            if (isset($request->databases_columns_value) &&
-                array_key_exists($database_obj->id, $request->databases_columns_value)) {
-
-                foreach($request->databases_columns_value[$database_obj->id] as $request_value) {
-                    if ( $request_value == $select['value'] ) {
-                        $column_checkbox_checked = " checked";
-                    }
-                }
-            }
-
-            // 変更時のデータベースの値から
-            if (!empty($value)) {
-                // 入力されたデータの中に選択肢が含まれているか否か
-                // 選択肢にカンマが含まれている可能性を考慮
-                if(strpos($value,$select['value']) !== false){
-                    $column_checkbox_checked = " checked";
-                }
-            }
-            @endphp
-
             <div class="custom-control custom-checkbox custom-control-inline">
-                <input name="databases_columns_value[{{$database_obj->id}}][]" value="{{$select['value']}}" type="{{$database_obj->column_type}}" class="custom-control-input" id="databases_columns_value[{{$database_obj->id}}]_{{$loop->iteration}}"{{$column_checkbox_checked}}>
+                <input name="databases_columns_value[{{$database_obj->id}}][]" value="{{$select['value']}}" type="{{$database_obj->column_type}}" class="custom-control-input" id="databases_columns_value[{{$database_obj->id}}]_{{$loop->iteration}}" @if(in_array($select['value'], $selected_values, true)) checked @endif>
                 <label class="custom-control-label" for="databases_columns_value[{{$database_obj->id}}]_{{$loop->iteration}}"> {{$select['value']}}</label>
             </div>
 
diff --git a/resources/views/plugins/user/databases/default/databases_input_radio.blade.php b/resources/views/plugins/user/databases/default/databases_input_radio.blade.php
index c29e7f90e..1b5f0ec15 100644
--- a/resources/views/plugins/user/databases/default/databases_input_radio.blade.php
+++ b/resources/views/plugins/user/databases/default/databases_input_radio.blade.php
@@ -12,22 +12,23 @@
     if (!empty($value_obj)) {
         $value = $value_obj->value;
     }
+    // 現在値の決定（リクエスト優先 → old → 既存値）
+    $current = null;
+    if (isset($request->databases_columns_value) &&
+        array_key_exists($database_obj->id, $request->databases_columns_value)) {
+        $current = $request->databases_columns_value[$database_obj->id];
+    } elseif (!is_null(old('databases_columns_value.' . $database_obj->id))) {
+        $current = old('databases_columns_value.' . $database_obj->id);
+    } else {
+        $current = $value;
+    }
 @endphp
 @if (array_key_exists($database_obj->id, $databases_columns_id_select))
     <div class="container-fluid row @if ($errors && $errors->has("databases_columns_value.$database_obj->id")) border border-danger @endif">
         @foreach($databases_columns_id_select[$database_obj->id] as $select)
 
             <div class="custom-control custom-radio custom-control-inline">
-                @if (old('databases_columns_value.'.$database_obj->id) == $select['value'] ||
-                    $select['value'] == $value ||
-                    (isset($request->databases_columns_value) &&
-                        array_key_exists($database_obj->id, $request->databases_columns_value) &&
-                        $request->databases_columns_value[$database_obj->id] == $select['value'])
-                )
-                <input type="radio" id="databases_columns_value[{{$database_obj->id}}]_{{$loop->iteration}}" name="databases_columns_value[{{$database_obj->id}}]" value="{{$select['value']}}" class="custom-control-input" checked>
-            @else
-                <input type="radio" id="databases_columns_value[{{$database_obj->id}}]_{{$loop->iteration}}" name="databases_columns_value[{{$database_obj->id}}]" value="{{$select['value']}}" class="custom-control-input">
-            @endif
+                <input type="radio" id="databases_columns_value[{{$database_obj->id}}]_{{$loop->iteration}}" name="databases_columns_value[{{$database_obj->id}}]" value="{{$select['value']}}" class="custom-control-input" @if($current === $select['value']) checked @endif>
                 <label class="custom-control-label" for="databases_columns_value[{{$database_obj->id}}]_{{$loop->iteration}}">{{$select['value']}}</label>
             </div>
         @endforeach
diff --git a/resources/views/plugins/user/databases/default/databases_input_select.blade.php b/resources/views/plugins/user/databases/default/databases_input_select.blade.php
index 971e8875c..c32666ecc 100644
--- a/resources/views/plugins/user/databases/default/databases_input_select.blade.php
+++ b/resources/views/plugins/user/databases/default/databases_input_select.blade.php
@@ -12,22 +12,23 @@
     if (!empty($value_obj)) {
         $value = $value_obj->value;
     }
+    // 現在値の決定（リクエスト優先 → old → 既存値）
+    $current = null;
+    if (isset($request->databases_columns_value) &&
+        array_key_exists($database_obj->id, $request->databases_columns_value)) {
+        $current = $request->databases_columns_value[$database_obj->id];
+    } elseif (!is_null(old('databases_columns_value.' . $database_obj->id))) {
+        $current = old('databases_columns_value.' . $database_obj->id);
+    } else {
+        $current = $value;
+    }
 @endphp
 @if (array_key_exists($database_obj->id, $databases_columns_id_select))
     <select id="databases_columns_value[{{$database_obj->id}}]_{{$loop->iteration}}" name="databases_columns_value[{{$database_obj->id}}]" class="custom-select @if ($errors && $errors->has("databases_columns_value.$database_obj->id")) border-danger @endif">
         <option value=""></option>
         @foreach($databases_columns_id_select[$database_obj->id] as $select)
 
-            @if (old('databases_columns_value.'.$database_obj->id) == $select['value'] ||
-                $select['value'] == $value ||
-                (isset($request->databases_columns_value) &&
-                    array_key_exists($database_obj->id, $request->databases_columns_value) &&
-                    $request->databases_columns_value[$database_obj->id] == $select['value'])
-            )
-                <option value="{{$select['value']}}" selected>{{$select['value']}}</option>
-            @else
-                <option value="{{$select['value']}}">{{$select['value']}}</option>
-            @endif
+            <option value="{{$select['value']}}" @if($current === $select['value']) selected @endif>{{$select['value']}}</option>
         @endforeach
     </select>
     @include('plugins.common.errors_inline', ['name' => "databases_columns_value.$database_obj->id"])