Supplier part no. not appearing on purchase order lines

Supplier part no. not appearing on purchase order lines. This happens when the purchase order is for a warehouse that does not exist on the warehouse tab of the inventory item.

Steps:

Create PO for 5005 (Note that the "Creditor Warehouse" on the PO is set to the Creditor's default - "Main Office").

Add line for part no. 01140008

Note that the supplier part no is populated on the grid correctly.

Go to Creditor 5005, add another warehouse called "test" (via the Address tab), make it the default, and save.

Create another PO for 5005 (Note that the "Creditor Warehouse" on the PO is set to the Creditor's new default - "test").

Add line for part no. 01140008

Error - the supplier part no is NOT populated into the grid. This is erroneously happening because part no. 01140008 does not have an entry for the new warehouse "test" on it's Supply tab.

The supplier part no. should be brought through to the line, regardless of whether the part has an entry for that particular creditor warehouse on its "Supply" tab.