The links between button enlogic + rail rotatorblocks stays when thee original linked rail rotator block iis set to another rail type and that one gets removed.
Also it apear the rail rotator is not working as it should because when a normal rail is placed after it the docked entity does not continue on its pathSimilar issue to what we used to have with weapon systems and the old elevators. although all rail direction are goodMeta data doesn't update/remove itself when it changes block types.