I believe they are command endorsements and the VCFO signed up for a 30 month bond with V, yet within 24 months the lucky ones have come over onto the 737 (on another bond) and did not have to pay any of the remaining bond on the 777.
The AFAP had a meeting with JB over this and the morale problem within the Ejet FO racks. My understanding (2nd hand info) is they showed him 2 pilots who had interviews with
VB 2-3 years ago. One pilot was offered employment as a Ejet FO while the other missed out. The pilot who missed out went on to get a job with V as a CFO. The V pilot was one of the lucky ones who have since joined
VB on the 737. The AFAP showed JB, the Ejet pilot who had given the company 2- 3 years loyal service was financially worse off due to salary sacrificing his endorsement and his pay is $20k less than the 737 FO.
The company had to do something, hence the change from April and then perhaps fleet pay.