Graphs should update when Combine Variables Using menu changes.
Graphs should update when Combine Variables Using menu changes.

This had stopped working, because we used to save this as a property on the links.  Now we store it as a property on the Nodes.

Story:
Graphs should update when Combine Variables Using menu changes.
[#154029978]
https://www.pivotaltracker.com/story/show/154029978

concord-consortium/building-models,concord-consortium/building-models,concord-consortium/building-models,concord-consortium/building-models,concord-consortium/building-models