Difference between Rebuild and Refresh Test Cases from Test Run execution screen

The Rebuild Test Run feature helps you to update the Stories/Test Cases/Test Scenarios selected in the Test Run with any changes made to it.

Refresh Test Cases is applied to particular Test Cases selected by users. i.e. This option is applied at Test Case level.

Refresh Test Cases will update only selected Test Cases, instead of updating all the issues/Test Cases within the Test Run.

Steps to use this feature :

1. Open the Test Execution page of the test run you want to execute.
2. Click on the Rebuild button on it.

Steps to use this feature :

1. Open the Test Execution page of the Test Run you want to execute. Click on the Bulk Actions drop-down and select Refresh Test Cases.
2. Select Test Cases you want to refresh/rebuild.
3. Click Apply.