I have been creating my own user arps successfully using Logic,
exporting a MIDI file and transferring it via USB to my Montage.

But I do have a UI suggestion. I am constantly tweaking the Arps on
Logic and transferring the MIDI file across again. But every time, I
enter the "Put Track to Arpeggio" screen, I need to re-enter all of
the details i.e. Category, Sub category and Name. Wouldn't it make
more sense if the UI automatically filled in the current values as the
Arp number on that screen is changed.

Can this suggestion be passed on to the Montage developers/designers?

Thanks
Sean