We have seen cases where users are seeing the incorrect totals on their reporting tab. This is an experience we have tracked in your account as we are continuing to troubleshoot it. I have taken a look at this particular campaign with the help of our upper level of support and they were able to confirm the exported count of 42 is correct. The export will always be right, because it pulls the data directly from our reports server. I apologize for any inconvenience this may cause! I have also added you to our queue to be notified when this is resolved.