Checking in at LAX today, I found out from the check-in agent that for certain flights, there is a trial going on with CBSA where if you have an ongoing domestic connection at YYZ, you do not need to claim your checked bags anymore.

For example, if you are flying LAX - YYZ - YUL, you clear CBSA in YYZ, but you claim your bags at YUL.

This was in effect for AC788 starting yesterday. Any other flights part of this trial?