This plugin adds a "Complete Tracks from RESET" option to the Animation menu in Animation bottom panel. The menu option adds missing animation tracks based on the tracks available in a RESET animation.

After enabling the plugin, you'll see a "Complete Tracks from RESET" option in the Animation menu of the Animation bottom panel. This option is enabled when the selected AnimationPlayer has a RESET animation.

After selecting this menu item, you will be prompted to confirm the tracks added to each animation before the operation is executed. The operation is undoable.