APXCADIP Create Adjusting Documents in Payables Program

When the profile option "PO: Allow Retroactive Pricing of POs" is set to "All Releases"  Oracle will allow the user to manually change the price on a Standard PO/ Blanket Release line which has already been received.

The "Create Adjusting Documents in Payables Program" will then for ERS PO's create PPA invoices to account for the variance. 

However, it is only creating PPA invoices for manually adjusted Standard PO lines and not manually adjusted Blanket Release lines.

Does anyone know how the Create Adjusting Doc..... program determines what needs a PPA invoice, or of some issue which would prevent that program from creating PPA invoices when blanket releases are manually adjusted instead of using "Retroactive Price Update of Purchasing Documents Program?"