It is this specific file that reverts DocProperties. If I create a new blank file and add DocProperties they are updated correctly.
@rlloyd
There is a hidden worksheet “Metadata” in “Excel Normal.xlsx” .
Please unhide it and you will find many description : “Microsoft Standard and Custom Document Properties”. Maybe your properties are recovered by data of this worksheet.
It looks like there is a Visual Basic function that was copying the values from the hidden Metadata sheet to the Document Properties. If I update the values in the Metadata sheet, the Document Properties are then correct.
Thank you for your help.
Please note, Aspose.Cells does not have the capability to run VBA codes in Excel spreadsheet. It seems you have resolved your issue and successfully retrieved the extensive list of document properties by modifying the data in the hidden sheet. Please don’t hesitate to reach out to us again if you have any additional questions or feedback.