After a new Portable Scanner is created, a new settings.dat file is generated with the required settings. You can find it in the Kavscan folder for a new Portable Scanner.
Copy the newly generated settings.dat file and locate it in a folder so that the file is at your disposal.
As a result, you have an existing Portable Scanner with two settings files.
Run Portable Scanner via command line and specify the path to the required file with settings.