Yes, you’re right. I’ll need to sync the photos to the desktop app in order to do that. I tried uploading directly from my iPad, which was the problem.Can you not go into the finder, locate the location of your photos library, go inside and find the folder named masters - these are the original copies. Sorry I havent really used photos (I moved from Aperture to Adobe years ago).
I assume it is the same file structure underneath. So when you see the masters folder, copy that into Adobe.