Do I need to change from “Current” to “Angle” on the Control tab every time with Scalar Digitizer?

I would go with the default preset settings when doing a Scalar BFB scan.
You can reanalyze previously saved BFB scans using the Analyze button and change the setting from current to Angle to generate a new BFB scan result list.
You can also generate a different set of BFB scan results using Angle + Current.

For more details, please check this link:
https://www.spooky2.com/forums/viewtopic.php?f=117&t=14326