Currently RE uses the Run Date when asked "record this mailing in each reminder history" which means if it is May 1st and I would like to send out reminders for anyone who is due on or before May 31st, 5/31 is chosen as the Run Date but that is also the date that is used for the reminder sent date if it is recorded in RE. There is no way to manually go back in and change this date to the date the reminders were sent either.
There were 26 votes on this in the old discovery idea bank - see links from JoAnn . . .
Already a suggestion here - please add your vote(s) there :)
http://rediscovery.uservoice.com/forums/137015-raiser-s-edge-discovery-topics/suggestions/5930073-in-export-to-be-able-have-gifts-that-are-listed-as
Don't know why cut and paste of link to other post didn't work.
Try this link:
http://rediscovery.uservoice.com/forums/137015-raiser-s-edge-discovery-topics/suggestions/2635615-allow-flexibility-for-date-recorded-in-reminder-hi