Hey there @papazweistein! It’s possible it could be that the regions are just too far away and are not being streamed in anymore automatically. World partition does this by default. You can check if that’s the case by disabling streaming in your world settings, but be warned, back up your project first (or at least the map) because if your world is big enough to crash your rig if fully loaded in at once, it may be a problem. However it’s excellent at letting us know if it’s a streaming issue or an issue with the proxies themselves.
If they all are visible after, it’s a streaming distance issue, if not it may have something to do with the proxies.