Midi export - chord invertion?

Hi,
I’ve just exported that simple chord progression from Hookpad and I wonder why it looks like this. Here’s the link (I cannot upload directly to forum because I’m new user):

Again - why there’s such strange inversion over chords? Every chord except C has his top note (or notes) transponed one octave down. There are also strange notes at the bottom, why? Is it some kind of bug like in this topic: Problem with MIDI Export - #11 by rogerclark
Could somebody explain me this?