Vendors invoices defaulting to separate check

One of my vendors invoices keeps defaulting to being flagged as separate check 

EERP

Invoice Processing

Vendors

Vendor has the Separate Check flag turned on in the Vendors program

1. Navigate to EERP>Financials>Accounts Payable>Vendor Processing>Vendors

2. Search  for vendor number

3. Click on the Miscellaneous tab and uncheck Separate Check flag

4. Accept changes and close out