Many thanks for the reply!
I’ve only noticed this in the contacts module after I did the insert/update. I gave all 2444 records a code in a field so that I could search for them after the upload, when I did search for them, Listview showed me 2561 records, which is when I noticed some of the records duplicated.
It’s an interesting point you raise about the relationships, there is a custom module related to the contacts, but it’s not used at all for these records.
Now I’ve noticed that one of each duplicate has the correct company name, the other just has a dot for the company name, so it’s looking like something to do with that.
Thanks again!
Luke