This scenario is applicable only if you are upgrading to Update 28 or a higher version.
In Update 28, the IssueDate_Conv computed column in the deliverable submittal mapping has been modified. To get the change, you need to copy the latest MSR version of the MDR Deliverable Create Map and update your HEX version. For more information on how to upgrade the mappings, see Upgrading the Data Validator mappings.