If you modify the requirement the traces connected to it and the requirement becomes suspect.Below you will know the steps to create suspect trace and delete them.

1. Go to my projects page.

2. Open your project.

3. Open the desired requirement.

4. Modify the name or description or both.

Open

5. Press update button.

6.Scroll down.

10. You will see red broken line on the traces and the downstream requirement traces.

Open

11. This is called suspect trace.

Clear a Suspect Trace

1. Open the requirement.

2. Click on traceability tab.

3. Click on the trace.

4. Select clear suspect.

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5.The red line will disappear.The trace will become green again.

Open

6. This is how we clear suspect traces.