The Sustaining Gifts tab in Donation Management only shows active, postponed, and lapsed recurring gifts. If you do not see a sustaining gift here it is most likely complete or has been cancelled. To view/edit any sustaining gift regardless of its status:
  1. Constituent 360 > Constituents > Search for the constituent > Click on the "view" icon next to their name.
  2. Go to their "Transactions" tab
  3. In the center you will see a section called "Sustaining Gifts". Next to the gift you would like to edit click on the icon that looks like a pencil.
From here you can edit information about the sustaining gift such as duration, amount, next payment date, billing information, etc. Note that if the gift has been completed or cancelled you cannot restart the gift, you will need to setup a new recurring gift.