It does not affect Zorro's functioning, but when you copy files into the Zorro folders or edit them directly, you need to know which folder is the right one. The UAC is not a problem for the software, it's a problem for the user.

I just turned off UAC to check out the difference. Just a note for anyone else that does this that you will need to copy all the shadow folders into your MT4 folder so that all your MT4 profile etc are saved there. The Zorro files are obvious but I hadn't thought about the MT4 profile. Just keep that in mind.