set alternate state C as UNION of possible values from A and B
I have a data model with customer, purchases, etc. My end-user has made a "selection set" in "Alternate State" A, on my data model based on a variety of fields and values. The user has also made a different selection set in Alternate State B.
Now, I want to move to Alternate State C, the list of customers in common with A and B. I don't want to get the UNION of customers from those two selection sets. I don't want the UNION of the alternate states, but just the list of customers. So the "selection set" for alternate state C should be a list of customer ID's and nothing more.
