Trustee's sale of claim to a creditor operated as an assignment of claim under all theories of the claim; this removed the claim from the jurisdiction of the bankruptcy action.
A bankruptcy court's interpretation of its order assigning a claim to a creditor in exchange for value to the trustee is not a contract but an order, and is reviewed for abuse of discretion and not subject to clarification by extrinsic evidence.
http://www.opn.ca6.uscourts.gov/opinions.pdf/18b0009p-06.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.