F-28 - Alternate payer

When processing a manual cash adjustment using Tcode F-28, I have noticed recently that when bringing in a customer, it would also bring all "alternate" payers as well. (Did not do that previously)

This new way has really created a very slow operating time within SAP.

Before: Using Tcode F-28, only the actual customer requested would generate - Would take secs for open AR to load
Now: Using Tcode F-28, customer and all aternate payers are pulled

and the request can take 10+ mins to be generated.