Returning Lone Wolf PvP player trying to XFER to Crusader Stike PvP

I have a friend who is returning to WoW who played on Lone Wolf PvP, and he is trying to XFER to Crusader Strike PvP but it gives him the following message:

Character Name: XXXXXXX
Source Realm: Lone Wolf ----> Destination Realm: Crusader Strike

Please Select a different Realm.
Selected Realm does not accept transfers.

I thought we werent being forced to PvE realms from PvP when the xfer process began back when it was opened.

interesting i just transferred an alt from Lone Wolf to Crusader Strike yesterday

Sounds like your friend is actually on the wild growth server