Thinking about why the developing team to set this limit, I think maybe it's because performance can be affected by re-arranging a huge (in terms of measures) "real-track" song, but not for MIDI ones.

It would be enough for me a pop-up that issue that "maybe some minutes needed to re-arrange this track".

... but, once again, I think this can only affect "real-tracks". Can somebody tell if that can be the point?

Thx