So Joe is forced to upgrade on the CRJ. Before he finishes his Fed ride he can still bid back to FO. Well, Joe also has vacation. He puts his vacation on the 3rd or 4th week of the month after the bid comes out and in a time frame he may think training footprint will occur. This blocks the company from sending him to training. The first week of the month of his vacation he can rebid his vacation. While Joe is in training for CA he can PREFERENCE bid back to FO and get forced to UPGRADE again to a different equipment that he could hold. CAs in DFW and ORD that is not on a proffer to displace freeze could proffer to displace to a different jet. Pilots displaced to CAs on the CRJ/145 could bid the CRJ/145/175.

Disclaimer: don't take this as advice on how to bid. However, if you do decide to do this then talk to your union rep and ask about it first. Don't the advice of someone you don't know on an online forum.

Guys on the SAAB/ATR strung this out for over a year when the 145 was coming online and SJU was closing. Some would call out sick during training. If you missed a couple/few days of 121 training then you had to restart the whole process over again. Not sure how it works with AQP.