Excluding Action Items with blank defer or due dates

Looking to create a Perspective that shows items which have been deferred and are available, but not necessarily deferred to Today, while excluding items with NO deferred date.

The problem is that deferred items tend to disappear once passing the date they have been deferred to. I would like to keep a running list of things that can be done if there’s time, without muddying up DUE and making it less meaningful.

Any thoughts welcome.