For now you could just continue using the cards as they are. They work across desktop and mobile and will continue to do so. You don’t need the add-on to review them, just to edit them. If you find yourself in need of that frequently, then I would just keep Image Occlusion Enhanced installed on your desktop and do your edits there. It works on 23.10+.
I’ve also been working on a completely new version of the add-on built on top of native image occlusion. That one might see a conversion tool added to it in the future.