Customer Accounts under Collections is Operating Unit Specific

Hello All:

We have multiple operating units sharing 1 Receivable responsibility.  MOAC enabled.

We can enter/import AR transactions, apply receipts, create/view customers for multiple operating units without any issues.

But found the Find Customer Accounts under Collections menu is operating unit specific, I can only find customers of the X operating unit that is embedded after the Find Customer Accounts form.  If I enter a customer that does not belong to X operating unit, I get a message "Value entered is not valid for current field, Please re-enter".  In order to see the customer of another operating unit, I have to add the operating unit to the MO Default Operating unit profile at responsibility level.  I have the need to see past due transaction of multiple operating units at