Hi Brian,
Thank you for posting back again and sharing your test results.
On the one hand, it seems that you have solved the issue, if so, we’re glad to hear that.
On the other hand, for another problem which is related to that each XML line is starting with ns1:, we have also tested it on our side, we created a new Excel file, then imported the XML file and mapped it, after then we exported the file as XML file, then we opened it with Notepad and it didn’t show any ns1:, as shown below:


Given this situation, to do more tests on our side, we want to collect the file with you then test it on our side to check if we can reproduce the same situation. You can upload the file via this link, then we can test it on our side.
At the same time, could you provide the screenshot of xml file on your side? May I know if you are using Notepad to open xml file?
Thank you for your understanding again.
Best Regards,
Sukie