Is there a way to "lock" sections in Figma Make to ensure they aren't removed or revised with an unrelated prompt to another section of the project?

I have been using Figma Make to mockup websites I plan to create elsewhere. I have found that many times a prompt I request on a section will make changes to another, unrelated section that I did not request edits to. And because there is no “undo” button, I lose the contents on the section I did not wish to have revised. 

I’m wondering if there is a way to lock sections that have been finalized so that no prompts on other sections have an effect on unrelated sections. 

Like a toggle lock and unlock so AI doesn’t mess up an already great section when I didn’t ask it to.