Solved myself, thought I would post answer to help others and also to get bug logged.
Restarted Ue4, splines were now entirely gone, but control points still selectable, just had to go round and wiggle each control point to force it to update.
Solved myself, thought I would post answer to help others and also to get bug logged.
Restarted Ue4, splines were now entirely gone, but control points still selectable, just had to go round and wiggle each control point to force it to update.