Hi Aspose, Today I’ve discovered the same issue with Aspose.Cells 18.7.1 and xls without password. Attaching all 3 files (TrackChanges2003.zip (15.8 KB)): original xls, xls converted to xlsm, xlsm converted to xls (where issue is observed). Let me know if I need to open separate ticket for this. Many thanks, Alex Shloma...fix by downloading it from dropbox: Aspose.Cells18.9.1 For .N...Thank you for uploading to DropBox. I’ve checked on my sample...