PSN ID Change Problems with Warzone / Cold War?

If I change my Psn ID, will it affect Warzone or Cold War? It is written that problems can occur if I want to change id. Did someone change their PSN ID during the Warzone / Cold War period & can you please tell me if there were any problems?

As far as I know, this is just a warning if something is wrong. Probably Sony is not even sure whether problems can occur at all but just packs the message to be on the safe side.

A colleague of mine has also changed his name and can play Warzone. I don't have any problems in other games either

Thanks for the asterisk.