Hi people!
Small phrases trying to give good answer

1. To transform a "easy rec" sequence the first thing to do is to know what instruments use each part of the composer.
ex: acc1 variation 1 guitar
acc1 variation 2 piano.
When tranforming to SMF this will generate two diferent instruments in the same midi track, so you must watch closely the composer in all its parts.
And every acc1,acc2, intro fill and so on can be diferent inside the same composer and this will generate a lot of information you have to separete to achieve the final goal a SMF. The SMF will play in other Keyboards and sequencers, but don´t forget that you always may use NX sounds if you want use the files generated again in the KN.
2. Work with a computer based sequencer (Cakewalk, Cubase ) I use Studio Vision Pro, it is the best way to "see" what kind of information the KN generates in every track.
3.You must learn what is the meaning of every information in the tracks. There are 128 parameters you can define with 128 steps for each one, beside the notes.
4.When generating SMF on a KN keyboard you must decide in which track you "put" the composer parts , drums 1 and 2 , bass, acc1,2,3,4 e5, and if use the acc pads, pad1 and2.
And you only can do this in the free tracks, because you have to preserve the "melody" tracks. You will see small signs on the tracks where are the melody lines and you cant use.
5.Try to use the same midi chanels numbers for your tracks numbers, this will help you to find easily what and where.

These are the the first steps, there are much more things to learn working with midi, and this depends of the keyboard you are using.... GM, GM2, NX , XG ... the bases are the same the routes are diferent

José