It seems to be impossible to track sites that has been deleted from the Monitor. That is relevant when a site is deleted by accident or moved via a mod, for example by Ore Patch Organizer. Neither scan the surface nor scan for miners work.

So I do not plan to support moving ore patches, it's just too much of an edge case in too many ways.

You can, however, re-scan any surface. If you do not care about loosing history (original size and discovery timestamp), you may even delete all sites from a surface and re-scan all for a clean state of the current map. Hope that helps!

Hmm, I tried deleting all sites and the re-scanning the surface before and it didn't work. And now it suddenly works (before I even applied the latest mod update). No idea why. Maybe I was doing something wrong. Anyway this bug can be closed, thanks.

Strange. Let me know if the issue comes up again though