Factorio Forums

If you remove an elevated rail support with super forced building, it will remove the support, but not the elevated rails it supported. This seems to only work in editor

Thank you for the report. This is not a bug, with the idea being that editor lets you do "what ever". So unless you observe this behavior in normal play or it produces some critical issues, this is desired behavior.

You can still blueprint it. Bots won't build it, but you won't know until you try placing it unless it's really obvious like in the picture I posted. If you want it to stay, you could add something to warn the player that it won't work in freeplay when you try to make a blueprint. I think there's also a mod for configuring the rail support range that would be easier to work with if that's what someone wants (though I can't find it now so maybe I'm imagining it).