The court documents about the DIP loan showed IMSC first tried to get it from Platinum several months earlier, then from L3, and finally they got it from the initial DIP lender. Platinum knew well ahead of time IMSC was going to go Chapter 11.
There is the BAM loan for $20M but hard to know what the relationship between BAM and PP is.
It could very well be that most of the $80M Platinum was saying they would return to their investors was going to come out of IMSC paying back the Platinum debt.