Merging database

i am starting a new game and i have done some editing for mk dons like coaches,and changed there kits,stadiums etc,but i have also downloaded Transfers & Data Update Packs by_pro can i merge these on my editor or will it duplicate everything

Unless new players were created I don't think there'll be any duplicates.

Might have errors though.

hi thanx for reply,what do you mean errors?

Depending on the changes, it could corrupt the database.

You can use more than one editor file at a time though, just make sure your file is ticked when starting a new game.