Batch unset "Set Picture as Background" for multiple pages

[sens1204]

Problem to Solve

[Message] I am a Japanese speaker using AI for translation. This is my first time using GitHub Issues.

I am managing an enormous amount of study material (over 10,000 pages in total) for a professional accounting exam.

Currently, my OneNote setup consists of about 100 "Pages," but each single OneNote page contains dozens to hundreds of PDF printouts inserted and "Set as Background."

I need to reorganize this massive content into much smaller pages, categorized by specific chapters. However, to move or distribute these images to other pages, I must first unset the "Background" status for every single image. Manually unsetting thousands of images across 100+ crowded pages is practically impossible.

New Feature/Solution

I would like a feature to batch unset the "Background" status for all images on a page, or across multiple selected pages at once.
This would allow me to quickly make all printouts movable again, enabling me to cut and paste them into new, smaller chapter-based pages.

Alternative Solutions

I've tried using the native OneNote right-click menu, but it only works for one image at a time. Given that I have over 10,000 pages of source material to reorganize, this manual work-around is not feasible.

Additional Context

Thank you for your amazing work on OneMore. It is a vital tool for my studies. Since I am new to GitHub, please let me know if you need any further information or clarification.