Mapping Edges Disappearing After Concept Expansion

[everbeek]

I managed to get normal mapping edges treated as temporary hover-only edges.

I had the Entire Pupil, and expanded the mappings, then the concepts (which happen to be fully expanded already). The normal mapping edges disappeared, but were rendered when I hover over either endpoint.

[everbeek]

I made poor logic for the temporary edge system. I was looking at only the most recent node interaction (expansion or deletion). I need to find all the way back to the first occurrence of the node, or a deletion of it. I know this is true for the mapping edge checks, but what about for expansion checks? True for those too...we are interested in whether the node has ever been expanded, up to the horizon of its first addition or an interceding deletion.