[imp] delete/purge message question

[Gary W. Smith]

We upgraded our systems to 3.1.1 a little while back and everything is
working fine for the most part.  Looking into a support call today the
purge deleted items and show/hide deleted items are missing.

I checked with one of my test accounts that has no trash folder, just a
basic setup and it indeed is gone.  I figure it would have to be
something in my configuration but I don't know where to begin on this.
Anyone else seen this problem?  Any ideas?

Horde 3.1.1
Imp 4.1

Gary