One possible work-around for acquiring constituent information is to run a report writer constituent interaction count report.
  1. Navigate to:  Data Management > Reports > Report Writer (tab)
  2. Click the "Create a New Report" button.
  3. Choose "Interactions" from the report type drop-down list.
  4. Choose "Constituent Interaction Counts" from the list of radio buttons.
  5. Choose the constituent fields you wish from the list of available columns.  Do NOT choose any columns from the "Interaction Counts" section.
  6. Complete the configuration of your report writer report, including adding (or removing) filters accordingly.
  7. Run the report.
  8. Download the results.
With Mail Merge, you can choose to export data about constituents who are members of a group.  To do this in this report, add a filter based on the Group Membership field found within Group filter category.