Hi Djacobs,
If i get your point, you have performed some exact data creation then something goes wrong (or you just upload it) and now in drop down menu you have your file(s) listed ?
to remove this, you have to connect on your enforce server, then go to SymantecDLP\Protect\document and just delete your file(s) which is stored there. Then it will automatically be removed from drop down menu.
regards