If Islandora is handling the URLs, you might be able to use Drupal's redirect module [1]. We use it to support the URLs from our old website, which we just migrated to Drupal. But if Islandora/Drupal is not handling the URLs, or if you have millions, this probably won't work for you. [1] http://drupal.org/project/redirect --Andy On Thu, Aug 30, 2012 at 8:51 AM, Pottinger, Hardy J. <[log in to unmask]> wrote: > Hi, we're in the process of migrating an existing digital library to a new > platform, and we want to ensure that old URLs continue to resolve to the > items in the new location. The new digital library will be built on > Islandora, and I am pretty sure we can just map old URLs to new ones > within Fedora Commons. But, in case we run into trouble, I was wondering