When using CTS, a frequent problem is that an item is keyed on description in DSP. E.g. Assemble packages are keyed on "Package Name." and it prevents CTS import.
In a DEV > QA >PROD setup...
It appears a UID is different, but the name conflict stops the import. There should be an option to overwrite on name conflicts
This scenario should be handled with Standard Operating Procedures to avoid the same name being used on deleted items. CTS uses the GUID and key fields to drive the insert / update / delete process and as such this would be very difficult to implement, without impacting additional items contained in the CTS archive package.