Add/preserve

[sisiraul]

Is your feature request related to a problem? Please describe.
I have bene trying to create a new excel book with an existing excel workbook template. But the pre-set custom table styles and background image cannot be outputted at all. Not sure if it has anything to do with encoding. Attaching the error message I got when opening the output file.

Describe the solution you'd like
I'd like to be able to use the template with background image in full. If I have a template already set up the background image, I just need the package can output as it is. As custom table style, it will be nice to have, but writing my own syntax wasn't too bad.

Describe alternatives you've considered
A new command allows me to set an inserted image as the background would be great

Thank you!