Is it possible to change a Drop Ship PO to a "normal" PO? We sent a Drop Ship PO to a vendor, but they shipped the item to our warehouse instead of to the customer

You might be able to break the link between the SO and PO somehow - I would expect unfortunate side effects doing this though, and would be tempted to just create a new PO and close off the other one.

I hear ya. Just worried the new PO may cause headaches for our accounting team when they get an invoice for PO123… but its actually for PO155 or whatever