Auto application of Projects IC Credit invoices

Intercompany Credit invoices when interfaced to AR are automatically applied to the invoice originally created for the expenditure item. This is the case even when the AR invoice is fully paid and gets overapplied as a result of the credit. 

The behaviour is different in AP. When the intercompany credit is interfaced to AP, it is a standalone invoice and not applied against the original (unlike AR)

This is resulting in severe payment application issues. Payment is initiated by the receiver from AP for open invoices. Details of paid invoices reach the provider and when they try to apply the received payment against invoices, they find some to be having no outstanding balance due to a subsequent credit applied against it.