Instead of pointing to a particular redirect link after the checkout screen, you can now choose to have all fundraisers point back to a single URL without inputing it multiple times.
To do this, go to your Field Partner dashboard and click on "Custom Redirect" under the "Settings" section of your Field Partner admin panel. You can add a custom link for the donor to be taken to after they have made their donation. This is a default redirect to be used when an individual fundraiser does not have one set.
Still want particular fundraisers to redirect to a different URL for a giving day or particular campaign? No problem. From the fundraiser dashboard, click the redirect link like you would normally and fill in the URL. This will supersede the Field Partner level redirect.