Currently, the only way to immediately save any changes to Quick Favorites is to have Auto-save Preferences enabled.
Meaning that any changes made to Quick Favorites will also be available to you on the next Blender startup, without much effort on your part.
Problem:
I make Blender video/gif tutorials, and I frequently make changes to add-ons like Screencast Keys that I don’t want saved permanently.
I also frequently enable/disable other add-ons temporarily.
Between these changes, I also find myself adding new items to the Quick Favorites menu, but I can’t save the new changes to the Quick Favorites menu without saving the changes made to the add-ons and etc. in Blender.
Is there a way to save changes made to Quick Favorites without saving the temporary changes made in other parts of Blender?