Chapter 15 is a foreign main proceeding (versus a nonmain) with the CCAA in the driver's seat. The US courts are rubber stamping the restructuring plan occurring within the context of the CCAA.
For every piece of DD that has been posted there is an equal amount not posted. A lot of smart people are on this and have chosen not to give away their hard work for free; there is enough information from PwC and elsewhere that strongly indicates shares are safe.
As has already been stated, this is a complex restructuring under the CCAA.