Anyway to easily change from the original script to your unofficial one? I got a lot of members and stuff I don’t wanna lose.

No SQL was changed. So in theory you can just upload and replace the old files.

If you use a custom template there will be some problems:
All the css classes were changed to id’s to prevent repeated usage.
Most styling information removed from function files.
etc.

It usually doesn’t take long to make a custom template fit this version of the script. All the changes are small just to make the whole arcade script w3c compliant.

If uou can post a URL or any more info, I could help a little more