If you're a custom map maker using advanced edit modes you will want to install my Map System Editor Fixes client mod: https://forums.uberent.com/threads/wip-map-system-editor-fixes.68511/ If you load Thanatos from Amplus without the mod in the current system editor you can easily see the following: lost custom landing zones on load lost custom metal spots on load If you load Thanatos from Amplus with the mod installed the missing landing zones and metal spots will appear. I'll also be fixing the following soon: planetCSG changes may be lost on save (work around is change to another mode before saving)