Eazy, no. It's been known (and documented in the POR) for a long time that the RONs were going to the lowest level of creditors reached. {In this case, it was the PIERS}.
The PIERS are still due more payment (the RONs only accounted for about 4.21 of 10.52 due per former PIERS share)
{As an aside, there was an attempt by the WMILT to 'sell' the RONs so that cash could be distributed to PIERs instead... that was nixed due to risks against the NOLs due to a possible IRS interpretation of the second-tier RONs}
Former Equity - once/if PIERS are fully satisfied {and a few more classes afterwards} -- receives cash only. Again, if/when the waterfall satisfies all the other classes first.
Your Escrow CUSIPs track that former ownership for distribution, if/when available.
...Catz