1) The HF's knew that Safe Harbor assets were there and were just waiting for the LT to clean up all litigation and claims knowing those assets would eventually be released thus making their intervention into the process unnecessary.
OR,
2) Because they were insiders to the process they knew that ALL WMI/WMIIC owned assets were contributed to the LT for distribution to Creditors and other Claimants, of which the HF's were by far the biggest beneficiaries of, making the bankruptcy closure irrelevant to them.