The debtors filing 8/30/18 states that the WMILT only became "successor in interest to Washington Mutual, Inc." which owned WMI Investment Corp.
Think about that for a minute. There are 2 bankruptcies, WMIIC, and WMI.................WMIIC filed first which protected itself from its parent WMI (who filed 2nd) and any other creditors............and as the debtor now admits, the WMILT only became successor in interest to WMI, bankruptcy #2.....!!!!!!
There is no 75/25 on everything as you've said. 75/25 refers to what is within the LT's jurisdiction. The LT only became successor in interest to WMI according to this filing.