The value may still be cached on the field that has been added to the form in NetCommunity. Follow these steps to remove the value.
  1. Navigate to site explorer > forms
  2. Edit the form in questions
  3. Scroll to the field on the form that displays the value
  4. Remove the field from the form
  5. Click save and close
  6. Edit the form once more
  7. Add the field back to the form