midi messages and polyphony

Hi all,
 

 Would anyone here know if when you exceed the keyboard's max polyphony does it send a midi note off message for the notes it has to drop? Ie, you have 64 note polyphony but use the sustain pedal and create an arpeggio that sustains more than 64 notes, do any of the dropped notes send a midi note off message to the vst you are controlling?
 

 Thanks in advance!