On SD1 "pattern edit", I cannot select timbers for different tracks for fill sections unlike for main sections (like "arrange A").

I want arrange A to use standard drum kit, arrange B to use tabla kit, and fill 1 to use tabla kit. After recording the pattern using an external midi sequencer, I get sounds for arrange A and arrange B as expected. If I press fill 1 while arrange A is running I hear tabla sounds. But if I press fill 1 while arrange B is running, I get standard drum sounds. This is not what I wanted (and expected).

Did Ketron intentionally did this, or is this a software bug (OS 4.0a)? According to the owner's manual fill section should have the same abilities as main sections. In the "pattern edit" chapter there is no mention of any difference between fill sections and main sections.

-Dimu