alphagov/whitehall — comment on commit 2f6caa6f78caf995c83eb2dc656e5c6a682efa70
File:  line 0
By chrisroos:

We don't think we need to worry about it. Our hope is that most people will have inserted links to the supporting document admin URL which hasn't changed and which we'll continue to rewrite correctly in the front end.

If we truly had URLs out in the wild then I believe we should've put redirects in place.