Hi guys
I have a record duplicate issue when importing vendor records from an excel sheet using data management in D365
These are the records:

As you can see the vendor account field is blank because I'm using the auto generate to create sequence numbers - which seems to work
The issue is when I update one of the records and re-run the import, all 6 records are imported again, and the last record I created does not import into the vendor list page

Can you help please?