Hi All - I have a UA Mileage Plus award (Business Class) booked on Copa and Turkish (BOG-PTY on Copa, PTY-IST on Turkish), with 7 hours between the flights at PTY. Given the situation that some have pointed out in the TK forum, where TK does not always allow free baggage allowance on UA award tickets (assume it is a technical thing), and sometimes fliers had to pay the checked bag fee even though they were technically allowed free bags.

So I am wondering (and hoping) that if we check in through COPA for the flights at BOG, that we can check bags all the way through for free to IST.
Also, has anyone had experience with these two carriers and Copa issuing boarding passes for both flights / carriers?

They both interline for each other and are also both in the Star Alliance, so I am hoping it is as easy as that!