Guitar Pro 6 I found out has less needed features than 5,
GP6 don't save midi bends,
it don't send bends to midi out
the exported xml won't show bends/play when imported back in to GP6
the exported xml from 6 will show/play/save to mid, bends in 5.
PreSonus Progression 3 is just as bad with no midi out, will not save bends to midi, it has ReWire (thats great) but with the crappy sound it has it is not much use.
You can open and play/edit Guitar Pro Tabs in TuxGuitar, save to midi with bends and it send the bends through Midi Out to a Virtual Intrument.
https://sourceforge.net/projects/tuxguitar/Tux RealRick & Progression3.mp4