So displacement is the wrong term... I apologize
They are moving (without and option) 100 76t FOs to 756 FOs ... If only a few 76t guys bid it, they will go inverse seniority and force us to move. That's according to the latest BAT bid that closes tomorrow. Which does not include any movement to/with the 737.
(Being forced off one airplane to another is a displacement to me, but in this case there is no choice in where to go .... But per the contract, it is not technically a "displacement")

But as Fly stated, maybe that number is changing due to a/c not being retired and they will not be "BAT"-ing so many 76t FOs