1. Open the most recent adjustment on the gift. Make note of the data on the adjustment
2. Delete the open adjustment
3. Either:

a) Mark the older adjustment as posted, and add the second adjustment. (Mark adjustment as posted if adjustment had already been posted to the General Ledger)

OR

b) Change the older adjustment to reflect what would have been on the most recent adjustment that was deleted. (Mark as posted if adjustment had already been posted, or leave as unposted if the adjustment needs to be posted)

OR Contact Support and reference this article.