Invoices with False Funds Check

We're currently using 11.5.10 with Purchasing, Payables, GL and Cost Accounting (Projects) configured.  We've configured our Project Tasks to use Absolute Funds control.  We regularly interface Standard Purchase Orders into CORE Purchasing using the PDOI with an Autorization Status of APPROVED and interface them into the Application as APPROVED.  We know that these transactions successfully post the approriate entries to the GL to reserve funds.

When we interface or even manually enter Matched Invoices against these records; however, the resulting Invoice is placed on a Funds Check Hold when the Validation process is performed.  To resolve the issue are users are forced to manually Unreserve, and Re-Reserve the PO record (not change to the PO whatsoever)... once this step is performed the associated Invoice Funds Check Hold is removed.