this is my first report, I hope Im doing everything right

I cloned some rail network in the new editor (rails and trains on some rails), then I used the decon planner to get rid of some parts (including the trains), now I cant mine the rails anymore (neither in editor nor in normal game)!
Even after placing a new train and removing it by hand in the normal game, I cant remove the rails. Taking a look at its properties in the editor it has the not mineable property set.
again I hope I did everything right and this wasnt already reported before!