1. Open up Sign-Up Requests
2. Highlight the transaction
3. Click on Create New > Edit and Create
4. On the Preferred Address tab, change the info 
5. Hit Save & Close
6. Process transaction
7. Close the window and open up Donations
8. Highlight the Donation
9. Click on Process Transaction
10. A screen will display saying "This transaction has unprocessed Profile Updates. Would you like to process them?" -- Click Yes
11. Make sure all of the boxes that you do not want to process are unchecked, and leave what you would like to process checked
12. Hit Save & Close
13. A window will come up saying "There are remaining updates for this transaction. Do you wish to reject the remaining updates?" -- Click Yes