The question is "How to consolidate different Player data with two Master accounts to one Master account??"
I suppose that there are same two players for two tiles.
But, Unintentionally Player B made difference Player IDs (Master) for each title, B has BBBB and EEEE by mistake. I think my question is equal to "How to update EEEE to BBBB for PlayerB?"
If I can update Player B on Title Y with Player ID, EEEE -> BBBB, then I think I can solve the problem.
== AS-IS ==
Title X
PlayerA {Player ID (Title) : 00001, Player ID (Master) :AAAA}
PlayerB {Player ID (Title) : 00002, Player ID (Master) :BBBB}
Title Y
PlayerA {Player ID (Title) : 00105, Player ID (Master) :AAAA}
PlayerB {Player ID (Title) : 00106, Player ID (Master) :EEEE}
== To-Be ==
Title X
PlayerA {Player ID (Title) : 00001, Player ID (Master) :AAAA}
PlayerB {Player ID (Title) : 00002, Player ID (Master) :BBBB}
Title Y
PlayerA {Player ID (Title) : 00105, Player ID (Master) :AAAA}
PlayerB {Player ID (Title) : 00106, Player ID (Master) :BBBB}