I own WH:TW1, WH:TW2, and every single bit of DLC.
However, I'm not allowed to play Immortal Empires because I own WH:TW3 on a different platform.
This isn't a technical issue - CA membership shows which DLC you own.
They want me to either purchase their game a second time or all of the DLC a second time.
This is a game that already costs £100s.
Do not support this awful policy.