we have a contribution that came in online from an individual, somehow she logged into her corporation's account (her email is on both accounts) and made the donation to that constituent ID instead of hers, can I move this money from one Constituent ID to another? How? I definitely CAN NOT merge the two accounts
Leah you don't use a payment type of On Account. We use a payment type of "Other" for moving money around to different accounts. So the money will not go on their account but go to a GL and then use that same payment method in the new account and it will balance out then to zero.
When you're backing out the original contribution, you wouldn't put it on account, you would process it as though you were completely refunding it but you'd refund it to the dummy payment method so it wouldn't actually go anywhere in real life. And then use that dummy payment method again (or a different one depending on your institution's setup) to pay for the new contribution on the correct constituent record, so again no money is actually going anywhere Tessitura just thinks it is.
So the dummy payment method shouldn't be an on-account type, ours is "other".