Whenever I see something like this, where a subset group of union members stands to receive something of value, I look for the national leadership to try and turn it into a negotiating point for the next contract.

Not saying that will happen here, but reason for the stall and the disagreement on the over-funding, where there is no fiduciary risk for the fund management to make the payout causes me to be skeptical.

The recipients- former L-cal, are viewed as rugs, so don't expect a return of the funds any time soon, without legal action.

My opinion.
YMMV