What encumbrance journal entries are made when 'PO: Validate GL Period' is set to Redefault

Using: Oracle Purchasing - Version 12.1.3 to 12.1.3

Referencing: Doc ID 1497200.1 and Doc 383143.1

Situation:

We have POs that were previously Reserved and Approved and are in various stages of Receiving and Invoicing.  The Period that the POs were created in (Reserved and Approved) is now closed but the buyer needs to make and adjustment to the PO and resubmit for approval. The profile option "PO:Validate GL Period" is currently set to NULL therefore the system is validating the GL period and seeing that the period is closed and throwing an error message when the PO is resubmitted for approval (Error Message 1 Below).  If the