Terrain wouldn't be affected by SI. I would expect that disconnecting from a server would properly delete the contents of the SI object group. Did you time out from a server?
If not... it almost always produces a UE upon completing load in another server with pieces still left.
When i was on war's server, around 100 SI pieces weren't deleted when he removed his building (with editor). Perhaps it could be related to this
Editor doesn't cleanly delete objects, I guess... and you can't run the editor in the supported configuration of the dedicated Tribes2_server.exe mode anyway.
Comments
Its an SI problem. Nao said so
It could be an SI problem. The terrain from a different map could've never been deleted.
If not... it almost always produces a UE upon completing load in another server with pieces still left.