Thanks, I followed your instructions and went through fine.
I'm now trying to remove uncomplete sets but clrmamepro doesn't allow me to. right clicking the list (after scanner) and selecting move to a dest folder doesn't do anything.
I read somewhere I had to uncheck the fix missing option, I tried unsuccessfully.

My idea would be to temporarily remove uncomplete sets, missing samples and chds so to have a barebone list of fully working games.
Then in the future chase the missing samples and chds.

L