The Reset button lets you to reset trace during the debug session. The trace data can be reset only when the debug session is suspended. The Reset button is enabled only when debug session is suspended and there is trace available to be reset. The user interface provides three options that you can use to perform the rest action:
When the reset action is performed, the trace data collected so far gets deleted and trace collection starts from the point where trace collection stopped. This feature is useful if you are collecting continuous trace and want to view trace data after a particular point of time. So you can perform the reset action which will erase the trace data collected so far and will start collecting trace from that point onwards.
To reset trace:
The old trace data will be removed and trace data collected from where it stopped is displayed.