How do we identify decommissioned reports in Payroll?

Summary:

We have been using the Payroll Register Report and discovered that there's a discrepancy when we set the Latest YTD Total to Yes. SR informed us that report is decommissioned.

Content (please ensure you mask any confidential information):

My payroll team is frustrated as that is not the only report we have been told is being decommissioned or is decommissioned. If those reports are decommissioned, how do we identify that in the system if those reports have to be left active? They want to know why a report is left in system if it is decommissioned or if there is an error with it.