Thanks for the recommendation on grid-refresh, that was the ticket!
Better yet I found I could eliminate the erp-baq get since the grid-refresh seems to do the same thing.
In the grid-refresh I did set the Include only parameter, which worked well once I figured out which ID it needed… which was the GRID ID, not the control ID
I found this post helpful in that:
Refreshing grid after updating it - Kinetic ERP - Epicor User Help Forum