As the title says, I have been googling, testing and rebuilding so many times, tried to track down the cause of this issue but I can't seem to find it. Most noteably, on another grid it just works fine so I though it was a design problem but as it turns out, a single piston with a merge block attached (as a ship) connecting to a station grid and then detaching it again remains as a station grid, with it being unable to be moved which is very bad for a piston's purpose. On another grid it just works fine. Detach, auto convert to a ship, move the merge blocks back and go one level deeper with that prototype of a drill. I have uploaded my world to the steam workshop here: https://steamcommunity.com/sharedfiles/filedetails/?id=1905390787 The white drill(s) are perfectly fine and work flawlessly, they are from a previous prototype version and don't feature much gimmicks such as blinking lights etc. The dark grey/red drills are the flawed ones. Their merge block grid(s) don't convert back to a ship grid when detaching whereas the white drills do. If you'd take some time to help me solve this mystery I'd highly appreciate your contribution. Thanks in advance.