The feature 'Add Test Cases from Test Suite' fails if Test records in "Inactive" state are present in the source Test Suite.
Steps to Reproduce
1 - Login a demo instance.
2 - Import the Test Case Instance records in the attached XML files.
3 - Open the Test Plan 'MRQ1_2017_WMS REG'.
4 - Click on 'Add Test Cases from Test Suite'
5 - Select 'WMS Regression' and launch the import.
Observe the procedure gets interrupted by the error below, and not all expected records finish to be imported.
WARNING *** WARNING *** Cannot convert null to an object.
TypeError: Cannot convert null to an object.
This problem has been fixed in Jakarta Patch 3 and onwards.
If a workaround is needed, remove all the inactive tests, or set them to Draft, within the specific Test Suite to be updated. The import will then be able to complete.
Related Problem: PRB752725