Question

Please add feature on Universal Control Software for importing/Exporting user defined settings.

This feature was available on your old "Audio Box" software

Answer 1

You can save individual channel presets on the mixer and export them to a device running UC-Surface/Universal Control and transfer them over to another mixer. 

Link: https://support.presonus.com/hc/en-us/articles/115001731003-UC-Surface-2-0-Scene-Save-Recall