diff --git a/invokeai/app/services/config/config_base.py b/invokeai/app/services/config/config_base.py
index 20dac14937..d7c8d40e2d 100644
--- a/invokeai/app/services/config/config_base.py
+++ b/invokeai/app/services/config/config_base.py
@@ -17,7 +17,8 @@
 from pathlib import Path
 from typing import Any, ClassVar, Dict, List, Literal, Optional, Union, get_args, get_origin, get_type_hints
 
-from omegaconf import DictConfig, ListConfig, OmegaConf
+from omegaconf import DictConfig, DictKeyType, ListConfig, OmegaConf
+from pydantic import BaseModel
 from pydantic_settings import BaseSettings, SettingsConfigDict
 
 from invokeai.app.services.config.config_common import PagingArgumentParser, int_or_float_or_str
@@ -62,6 +63,22 @@ def to_yaml(self) -> str:
             assert isinstance(category, str)
             if category not in field_dict[type]:
                 field_dict[type][category] = {}
+            if isinstance(value, BaseModel):
+                dump = value.model_dump(exclude_defaults=True, exclude_unset=True, exclude_none=True)
+                field_dict[type][category][name] = dump
+                continue
+            if isinstance(value, list):
+                if not value or len(value) == 0:
+                    continue
+                primitive = isinstance(value[0], get_args(DictKeyType))
+                if not primitive:
+                    val_list: List[Dict[str, Any]] = []
+                    for list_val in value:
+                        if isinstance(list_val, BaseModel):
+                            dump = list_val.model_dump(exclude_defaults=True, exclude_unset=True, exclude_none=True)
+                            val_list.append(dump)
+                    field_dict[type][category][name] = val_list
+                    continue
             # keep paths as strings to make it easier to read
             field_dict[type][category][name] = str(value) if isinstance(value, Path) else value
         conf = OmegaConf.create(field_dict)
diff --git a/invokeai/backend/install/invokeai_configure.py b/invokeai/backend/install/invokeai_configure.py
index 53cca64a1a..736c7fc5f7 100755
--- a/invokeai/backend/install/invokeai_configure.py
+++ b/invokeai/backend/install/invokeai_configure.py
@@ -17,7 +17,7 @@
 from argparse import Namespace
 from enum import Enum
 from pathlib import Path
-from shutil import get_terminal_size
+from shutil import copy, get_terminal_size, move
 from typing import Any, Optional, Set, Tuple, Type, get_args, get_type_hints
 from urllib import request
 
@@ -929,6 +929,10 @@ def main() -> None:
 
     errors = set()
     FORCE_FULL_PRECISION = opt.full_precision  # FIXME global
+    new_init_file = config.root_path / "invokeai.yaml"
+    backup_init_file = new_init_file.with_suffix(".bak")
+    if new_init_file.exists():
+        copy(new_init_file, backup_init_file)
 
     try:
         # if we do a root migration/upgrade, then we are keeping previous
@@ -943,7 +947,6 @@ def main() -> None:
         install_helper = InstallHelper(config, logger)
 
         models_to_download = default_user_selections(opt, install_helper)
-        new_init_file = config.root_path / "invokeai.yaml"
 
         if opt.yes_to_all:
             write_default_options(opt, new_init_file)
@@ -975,8 +978,17 @@ def main() -> None:
             input("Press any key to continue...")
     except WindowTooSmallException as e:
         logger.error(str(e))
+        if backup_init_file.exists():
+            move(backup_init_file, new_init_file)
     except KeyboardInterrupt:
         print("\nGoodbye! Come back soon.")
+        if backup_init_file.exists():
+            move(backup_init_file, new_init_file)
+    except Exception:
+        print("An error occurred during installation.")
+        if backup_init_file.exists():
+            move(backup_init_file, new_init_file)
+        print(traceback.format_exc(), file=sys.stderr)
 
 
 # -------------------------------------