I explained on the Roland-arranger site how to get your split points to be held. Did you not read that?

Perhaps you misunderstood the concept of Favorite Tones? They are not intended to call up an EDITED version of a Tone, simply the Tone from the regular bank. If you need a Tone with all edits, it has to be either in the Performance the way you want it, or in an OTS setting.

I simply feel that you tried to grok the BK-9 without reading the manual (how could you miss the split point hold if you had?) enough, and have assumptions about the OS brought in from other arrangers and think everything should be a Korg, or whatever you hold as your favorite?

I can probably think of several things a Roland can do a Korg can't. But if I buy a Korg, it's no good assuming it CAN do these. Every time you change manufacturers, assume there ARE going to be significant differences. If you can't live with these, don't change manufacturers! Take Donny... keeps going away from Yamaha, raving about his new arranger, then going back to Yamaha when he realizes it's not the same!

I think, on the whole, you have wildly underestimated how long it would take you to get used to an operating system utterly different to what you are comfortable and familiar with. I think there ARE ways to do what you want. But they aren't Korg's ways. They are Roland's.

But best of luck with whatever you settle on.