Ah I create a copy at the project location which seems to do the trick. I've noticed when I place a reference image into the project (Viewport Configure > Back tab > Image) I don't get the prompt to create a copy at the project, which I have to reload that between machines.
The one downside is when I'm deleting the tex folders at the end, it'll lose those paths, but maybe on final version I'll do a save with project with assets for archiving.