I think pictures explain better:
You can see that within a part, the relationship of intervals is maintained.
If we then split the part:
The relationship of intervals is not maintained. I cannot tell at a glance whether a part is on a higher or a lower register, because the “auto center”, “auto-zoom”, I don’t even know what it’s called, does its thing on each part.
It would very much suit me if this “auto centering” was taking place on the track level, and not on the part level, so that one could have many split parts and still be able to determine by just a glance the approximate registers.
Oh, and could we have the lower editor “auto center” the selected part? Maybe those two have been hooked up the wrong way around?