Downloaded Benchvue and am using it with a N3300A electronic load that has two load channels installed. When I use the electronic load app, it only allows me to chart and log one trace at a time, i.e. I can not log the voltage from both channels at the same time to test two batteries at a time. I get an error that says something link 'Too many traces selected, can only log 1. Any ideas or help? TIA.