"Unfortunatly the AIPA Committee has not received a response to their letter to the Chief Pilot asking if this is all just a rumor and I suspect even if they do get a response they will go along with it. "
LIPEZE - As posted on Qrewroom and is fact (as I telephoned the union ), AIPA is against Vertical promotion and will support any pilot disadvantaged by it.
Instead of complaining about the union, ring them and attempt to find out the facts.