I don’t believe this is a bug, but possibly an issue with your CSV set up. Can you take a look into this article and make sure you’ve followed the correct steps to set up your CSV?
I’ve removed the screenshot from your last post as it contained some private info that can’t be shared publicly. If you’re still running in the same issue, could you please forward you CSV to our support team? They will be able to take a closer look into this for you!