I created some UDIM tiles in blender and everything looked good, but then i imported it into substance painter and baked and it only baked the mesh map of what was in the UV space, which included only one tile. Figured out what I did was create UDIM tiles but without adding in the image first, which is why they wouldn't show up on the drop down menu in the UV editor.
So basically if I am understanding correctly, blender thinks that all of my tiles are separate UV grids? I'm very confused.. My UV grid:
Is there any way to add an image for each UV tile, or is it too late? I tried adding in an image but it only applied on one UV square, and i can't make multiple images in one UV space, if that makes sense. What it looks like in substance painter: