Quick question for those in the "know" (a.k.a. ACL) regarding pay protection.

Looks like many will be losing their pay protection in this bid, myself included, so when exactly does one's pay revert back to his/her lower paying position?

Is it when the AE bid is released like it was yesterday and one can see what his/her seniority could have held?

Or is it when the pilot junior to you with the higher paying position converts through training?