Please remember that Query is how to find a group of people, it is not intended to be used to export data and may show duplicates.  To get a list of current members we need to first create a query to find them, then use that query in an export.

First find current members in the Raiser's Edge using the Query Module:
  1. Create a Membership query
  2. Under Criteria select Membership > Current > Category equals (The membership category you are searching for)
  3. AND select Membership > Other Members/Card Holders > Membership Joint Member? equals Yes
  4. Under Output
  5. Save your query.
Next export the list of current members from Raiser's Edge using the Export Module: 
  1. Create a new Membership export
  2. Click Include, Selected Records and click Find Now
  3. Browse and select the Constituent Query you created above.
  4.  
Sort the exported file using the Primary? column; members that are not Primary can then be deleted