Bankruptcy, Retroactive application
As Bankruptcy petition changed from reorganization to liquidation subsequent to the change in the statute regulating subordination of secured debts in liquidation proceedings, administrative expenses incurred in reorganization phase cannot gain priority through the equitable subordination of secured debts.
http://www.ca4.uscourts.gov/Opinions/Published/151316.P.pdf
Since 2011. An occasional commonplacing of the U.S. Circuit Courts of Appeal.
Neither an authoritative statement of the law nor legal advice. Quick work.