It would be great to be able to lock specific parts of GPTs. At the moment is appears that each time update is being applied by GPT Builder to GPT based on prompt at random Conversation starters, title, description can change. Same applies to Instructions which means at times valid prompts or other settings are deleted . Preferable there would be a way to get history per section and diff for Instructions with ability to lock section so they do not get altered and allow to freeze be able to pick best fit.
These might help: