Hello,
Thanks for your further feedback.
I have tested your new document with the version
Spire.Doc Pack(hot fix) Version:5.6.62, and it was converted successfully but incompletely. I forwarded it to our dev team.
Regarding the previous issue, it has been fixed. It is testing now. We will provide you a hotfix when all are resolved.
Apologies, the issue brought you the inconvenience.
Sincerely,
Caroline
E-iceblue support team