It seems that in the following case the blank sequence is ignored. The blank sequence is at the beginning of the song.
screenshot 1 : song
screenshot 2: pattern 0
screenshot 3: copied song to pattern 8
The workflow behind this is adding a blank sequence at the beginning of the song/ pattern to record the separate outs in the DAW.
I always leave pattern 0 blank for this purpose.
We will fix that. In the meantime, you could record a pad press to pattern 0 from a pad with no sound assigned, or with the level turned all the way down.
Thanks for the tip 
As it is a simple song, I just stayed in song mode while recording to the DAW last week.
To be honest I haven’t figured out yet if there are advantages or drawbacks between song mode and main mode for this case when recording the separate outs to a computer.
