I've been doing my research and am working on Dual Boxing a Priest and a Mage. Before I get into my question to much this is my setup:

Main account (Account A) Linked to RAF Account (Account B) Wife's account not linked to anything (Account C)

I would like to take these two accounts (A and B) pair them up with my wifes 75 Priest (C) and power level in instances to 58. I was doing research and read this possibly might have been "Fixed". Is this true if I have a higher level character in party running a dungeon/instance I will not get triple xp?

Thank you!