I use GoodNotes to label anatomy pictures. I paste the picture into GoodNotes app on my laptop and then label the image with my iPad + Apple Pencil. Multiple times, I've labeled an image fully (takes a lot of time) and on my laptop, when trying to sync, it slightly moves the image so all of my labels are now off and impossible to re-align because when you move an image, the labels go behind it (can't see anything). It would be nice if you could merge layers (image + labels) so nothing can detach them like moving the image.