You're welcome Bobby! 🙂
Normally unchecking that box will simply disable the automatic configuration that is facilitated behind the scenes by the MIDI Device Script I mentioned, and this simply means that your keyboard will send MIDI data to Logic that's not mapped to anything (so, plain MIDI notes, Control Change events, Pitch Bend, etc.)
Yes, by doing this you'll be able to freely assign any of the MIDI messages your keyboard sends to parameters of your choice in Logic.
Good. Sure, post back if you run into other issues.
J.