Before I go too far, did you read this section of the 2012 R2 Release Notes?
Support for Crystal Reports 2013
Interaction Reporter now supports Crystal Reports 2013. It also provides backward compatibility support, in
CIC 2015 R2 and later, for Crystal Reports that were created with versions 9, 10, and XI in CIC 2.4 and 3.0,
and 4.0.
As part of this update, the Historical Reports view in IC Business Manager is no longer available. All Historical
Reports in IC Business Manager that did not previously have an equivalent report in Interaction Reporter are
migrated to Interaction Reporter in CIC 2015 R2, and following the migration, will appear in the Interaction
Reporter module in ICBM. And, in Interaction Administrator, the Historical Reports container is no longer
available and Crystal Reports now appear under the Report Management container.
Note: Following the CIC 2015 R2 upgrade, customers that have used Crystal Reports must run IC Setup
Assistant to migrate custom report templates and other related database information. In Setup Assistant,
select Database. Setup Assistant guides you through the entry of information related to your database
configuration, and then it migrates the templates. For a pair of switchover servers, you must run Setup
Assistant on the backup server after applying the upgrade and before starting the IC service. You don?t need
to run Setup Assistant again after upgrading the primary server.
Maybe you are not looking under Interaction Reporter for the report, or maybe you did not run Setup Assistant as required after the upgrade? I don't remember whether the report you reference is Crystal or Data Dynamics based.