Impact Analysis

A change in the requirements can be a lot of extra work for a Tester because a change in the requirements can have impact on the Test Cases. Especially if the Model was approved, the Test Cases were generated and the executing of the Test Cases in the System under test (SUT) is halfway. 

If you use TestCompass this is no problem. You just need to update the Model and run the Impact Analysis to see which impact the change in the requirements has on the previously generated Test Cases.