It would be nice if there is waveform reload function and a button for it on Waveform Viewer.
Currently, we have to close Waveform Viewer and reopen updated *.mxd file on VS code once new simulation is run again and *.mxd file is updated. Shown signals should be kept even if the waveform file is reloaded.
I have logged your feature request for the Waveform Viewer. As an evolving product, we are continuously improving its functionality and usability.