Do I have to use original QI?

[Jack B.]

Long story short, QI I had hired conveniently couldn't match the wire I had sent to his apparently commingled account or so he alleged. After I got the FBI involved the QI suddenly became more cooperative and less vague, rejecting the wire since he couldn't match the funds after 9 days of me trying to get receipt confirmation. So money went back to escrow.

Some attorneys say I can switch QI's because they've had other QI's wire them funds from clients. Other attorneys I talked with said I can't change QI's once the house is sold. 

So who is right here? Basically I'm looking at a potentially hefty tax bill after this guy screwed me?