I am sure they were burned, but the TIPS community would be interested to check for themselves.
Hi PD,
Unfortunately Coinexchange never returned the swapped Tips to the project team before the exchange shut down. The last messages we received from Coinexchange alleged that the CE Exchange Tips wallet had become corrupted, and that they were unable to send them to us so that we could destroy them.
We pressed them repeatedly to send us the wallet.dat file so that we could verify their claim, however they did not return the wallet nor any of the Tips. Shortly before they closed they stopped replying to our messages entirely and we received only silence.
As to the ultimate fate of the swapped Tips - well that is anybody's guess. I would imagine that anybody with a modest amount of knowledge could study the blockchain and come to their own conclusions.
Best regards.