H1B Transfer to other employer- Need to do stamping again

I am on H1B, need to transfer my H1 to other employer. In that case if I went to India then I need to do the stamping again or stamping will be valid as per my previous empoyer H1B petition.

IMO, stamping is not required but not everyone shares this opinion. So I suggest talking to your new H-1 attorney before making the final call.