This is exactly the issue that we're running into right now. We're having users submit updates to their Strategic Plan items on a quarterly basis through Workfront. We're trying to only expose one quarter at a time (so a total of 2 queue topics at a time). Currently we can only delete queue topics, which means that everything that has been entered for Q2 will be deleted when we expose the Q3 queue topics. This also effects our reporting as we have a lot of reports (which are sent to our Executive Team as well as our Board of Trustees) as we are filtering by Queue topic to pull in the right data for the right quarter.
The only work around I have for it right now is to create a new request queue every quarter so that we don't lose the historical data but this means sharing a new queue with our users every quarter which will be confusing for them.