We booked a family trip a couple of months ago in PE. It’s a round trip, international ticket. At the time, I had set a Google alert for ticket prices in PE and J. PE price is now about $400/ticket less, and J only about $300/ticket more. Would canceling and rebooking the same flights in PE, thus gaining a credit worth $400 each violate any conditions? I can’t seem to find anything suggesting it would but wanted to be sure. Of course, upfaring to J would be no problem I assume.