Playlist with single mp3 from various folder

Thanks for help! Great program!!!!!

Trying copying the files from mixed playlist I found this:
Create Batch-Files using the export feature

Can you tell me, where I have to write the Target-Directory in the mpe file? I don't see where the %temp%-directory copies the files.

And another question: The new user-defined fields for my playlist don't appear in other programs? Even a second genre did not?
I tried to find my tags with the player AIMP with ID3v2