Hi slab1
Unfortunately it is not possible to update test cases by export/import. An import always creates new test cases. Other options are:
- The one that JohnO suggested (you can use the Filter option to also help with refining which tests are selectable)
- Use the relevant API for your instance (Cloud or Server) which have a Test Case PUT endpoint that enables the update of test cases (links below)
- If you haven't executing the tests yet, you could use the export/import option to refine your tests until you are ready to start using them. Once you start executing the tests they will generate an execution record that will be lost if you export/import - as you know, it will create a new key
API links:
Cloud version
Server version
Best, Andy