Hi Jacob,
Currently the shared view link stays active indefinitely. Eventually we will have to bring about a mechanism by which they become invalid.
When you create a shared view, a copy of the document in its current state is stored on a server maintained by Concord. As you know, this copy does not “track” the original document, but gets updated when you have the document in front of you and Update Shared View.
Some groups have used the shared view mechanism as a backup to saving files. It’s a bit cumbersome, but it certainly does work.
Bill