With the addition of bug 24279, libraries can no longer change the status of a claim return without checking the item in, which is not a desired behavior.

Example: a library sets an item to claims return, looks for the item for three months per policy, item is not found, status needs to be changed from Claim to Lost so the patron is billed for the item.  

In this scenario, the item should not be checked in to clear the claim status.  Marking the claim as resolved does not allow the status to be changed either.

Perhaps this could be a setting with Claims Return system preferences as to whether staff are permitted to change the claim/lost status of an item from moredetail.pl?