Character Customizer (Version 4)

I do no thave this asset, however ive been following it for a while. Sadly I cant read 20 pages of comments.

Question

  1. If I purchase the asset, and make custom changes AND THEN a new update for the asset comes, which is required (optimizations, bug fixes, etc), does it mean I need to throw away all my custom changes (code related)? or is there a way to easily update the asset

regards