Shelia,
I had this same question a couple of years ago, I don't know if this thread will help (you may have already seen it): http://www.tessituranetwork.com/Community/forums/t/11996.aspx
I ended up leaving the write off alone, but you could do it through the back end.
Melissa
Thanks, Melissa and Brian.
Brian-- I wish it were that simple-- but writing it off locks it from any type of adjustment at all.
Melissa-- thanks for the link! I did end up choosing the route of editing from the back end (in case it comes up for anyone else-- go directly into the database and set t_contribution.cancel to 'N' and pledge_status = 2 for that contribution, as described here http://www.tessituranetwork.com/Community/forums/t/10593.aspx).
Cheers,
Sheila