Hi LisaBetts,
Welcome to MYOB! You’ve already done a great job trying to troubleshoot this yourself.
Inventory adjustment imports can be a little picky, so it’s not unusual to hit a few bumps along the way. A handful of things can cause the import not to go through, such as hidden blank lines, mismatched locations, unbalanced transactions, or other formatting quirks that usually show up in the import error log. There are also a few handy tips to keep in mind when importing, which are covered in this link.
If you’ve already given those a go and the import is still not playing nicely, the best next step would be to look at the import error log, as that will usually point you to what’s actually causing it to fail.
Cheers,
Princess