Tried asking on EA Answers who told me to go through EA Support, once I did the advisor I talked to told me that his team concluded it was a bug and should be reported as such.
Here is a summary of the issue from my Answers thread
Recently I noticed that my BF4 Beta dogtag is not select able anymore. when I go on battlelog, I can still select it for my PS3 BF4 account, but its greyed out on my PS4 account, despite being tied to the same Playstation account. Is there anyway this can be fixed?
This was the reply I got from the EA Support team
the link of which redirected me to the EA Support search list.