Mod version: 1.2.2
Well, the title says much for that.
When I use this mod on a server, everything is fine until a restart. But after that all diagonal connectors just disappear. Everything else used (lanes, blocks, road parts) is saved correctly.
In singleplayer everything includeing connectors works fine either.

Fixed in 1.2.3, just testing a few other things and aim to release by the end of the weekend :)