How do you 'update' an already existing texture with new work on a mesh?

Hello @Feld Four,

Thank you for sharing your workflow.

If I got you right, you have two issues here.

1. When you export your work it creates a new file instead of replacing the previous one.

2. As in your last screenshot, the update doesn't go on top of the Atlas, but replace it.

For the first point, that's perfeclty normal. The new project probably doesn't have the same naming, therefore it can't override the previous one. If you want it to override, make sure it shares the same name and save it at the same location.

For the second point, that's also the expected behavior. Painter doesn't really compute what's outside UV islands (excepted Dilation)

Personally, I advise you a different kind of workflow. I advise you to create a "Master" project file, where you'll build the entire atlas.

Let's say you have finsihed modeling/unwrapping Object 01, you export it as a .FBX and launch Painter to work on its texture. Once it's done, you export the texture and the first loop is over (that's pretty much what you're already doing). But for the Object 02, instead of exporting it alone, you'll merge it with Object 01, and export both of them in the same file, overriding Object 01.

And instead of creating a new Painter Project, you reload the mesh (CTRL + SHIFT + R). This way, you should have Object 01 and Object 02 in the same Master project and done properly, you should even keep the layer stack. In addition, your texture export will automatically override the previous one.

Best regards,