Try removing the GGclassic folder, load Max to check that its gone
make sure the mega pack is deleted from the GGClassic folder then copy it back
see if that then only shows the ones you want .
NOTE ...
Copying the whole lot over in one hit really is not the best way to do this
Some models are very old converted from FPSC and will cause this issue. Not all will work, Its not a 100% guarantee especially the really old ones. Ideally you need to copy a pack at a time, Load Max and check they scroll
then on to the next pack.
Hope that helps