Performance Mode Cumulative Stats for Campaigns

When using a GoTo element to have contacts loop thru a series of emails multiple times it would be good for OP to capture the stats (open, click, opt out, etc.) each time the contact goes thru the loop.  Currently OP only captures the 1st time thru for each contact.  I would use this for longer campaigns and look at the data monthly, weekly and see performance changes for the 2nd, 3rd, 4th, etc. time thru the series.