PokerTracker

Hello I have recently started using pokertracker4 and my games are all inputed correctly, however the string name is the website's userid. i would like to bulk replace these strings with another string of an 'alias' to refer to the user id by. how can i do this?

You cannot change the player names in PokerTracker 4. You could edit the name in the hand histories before importing them or if you are familiar with PGAdmin you may be able to modify the database outside of PokerTracker 4 however that isn't supported.