I setup an import with a test file with only one row and when I run it, it seems to keep running over and over (creating the entry the first time, then updating after that).  I discovered it because a) I’d delete the entry I just imported to change something in my test CSV and another entry would immediately appear with an incremented entry_id and b) I got a bizarre “you are not authorized to perform this action” error in Grid columns when I tried to edit the new entry while that import loop was happening.  Once I figured out what was happening, I worked out I could manually refresh the DataGrab screen, which only then revealed the “Complete” status, and at that point the loop stopped and I could edit the new entry without issue.

I’m not sure if it’s environment related or what, but if you’re not able to replicate in your own builds, I can start the ball rolling to get you CMS access to our staging site if necessary. Let me know if you need anything else for this.