BPM action Add Related Record not recognizing existing related module

I'm trying to create a BPM process that automatically adds an Opportunity record whenever a Demo record is created with certain criteria.  I created a 1-to-1 relationship in Studio between Demos and Opportunities.  However, when I try to create my BPM action, the Action Type of Add Related Record is greyed out.  When I hover over it, it says there are no related modules.   I can see the Demo-Opportunity relationship I created in Studio.   I can't figure out why the BPM designer isn't recognizing it.  I've deleted the BPM module and started over, but still won't work.

I'm running sugar enterprise 14.0.3 on-site.  The Target Module on my BPM process is Demos, and I can add the criteria on the start settings.  I just can't get the action type to work.