#1 - July 15, 2016, 5:43 p.m.
Towards the end of testing in a milestone we begin to flag builds as 'Release' versions, so we can test a game client that more closely matches the behavior of the live retail version of the game. Release versions don't change much in terms of content for public testers, however certain test features will be disabled, in this case: in-game Character Copy functionality.
Character Copy was disabled in the build we released earlier this week and will likely remain disabled for the remainder of 7.0.3 PTR testing. Existing characters will not be affected and Character Copy will return after at a later date.
I would also like to thank everyone who helped us test 7.0.3 on the PTR. Your continued feedback and reports help make World of Warcraft a fun and rewarding experience for all!