Dear vargas,
Thanks for your feedback.
Please try to use the latest
Spire.Doc Pack(hot fix) Version:5.7.72 firstly and create a new document and then clone all files into it, not set one of them as target document, as the result document will be the same format as the target document and maybe this is the reason that cause the issue. If the issue still presists, the better to send sample document(you can change/remove the confidential information as long as the file can reproduce your issue) to us(
Support@e-iceblue.com) via email, we promise to keep it confidential and won’t use it for any other purpose. That would be very helpful to investigate this issue.
Thanks,
Betsy
E-iceblue support team