I just want to select the right one to delete instead ot deleting the wrong one then ctrl+z then selecting the other one and deleting again. If there is a way to know which node belongs to which segment please let me know :). Thanks in advance! :)
It's late to reply, but just wanted to share. I suppose, you are using CDGS2017 version (latest).
On breaking the node you should see two arrows side by side when the nodes are placed exactly on one another. The arrows indicate the curve direction. The node arrow placed on the curve is the start node which controls the segment on counter clockwise direction. Which means if you delete that node, the segment on the counter clockwise direction will be deleted.