Hi!
Which documentation did you follow?
Did you verify the md5sum of the downloaded XVA file?
The XCP-ng logs may provide further insight into the error: https://docs.xcp-ng.org/troubleshooting/log-files/
Regards,
Dan
If i recall from my migration I belive thats all there is to it. I know the docs mention about doing a test migration but mine just migrated and it just worked as you stated after making the needed adjustments.
Let other chime in but i think you are good to go. And you could delete the snapshot from the vm.