The HB unit records the raw data ... Changing settings during recording will not affect the recording ... (Except for... changing the Imaging Frequency will change the recording because the unit cannot record both frequencies from the same SI piezo at the same time) ...

The view changing to Contour Mode... I have not heard of in any of the forums ... This must be something software version specific ... Try Restore Defaults and see if that goes away ...

Also ...some software versions show pauses in my SI scroll ... Some do not ... Some versions even show left and right SI scrolling Un-synced ... Gremlins shall be present = "Depth finder commandment #1" ...

Rickie