If he went different ways with a wallet with a substantial amount in there in 2016/early 2017 why on earth would he send it to Teken in late 2017?
For the same reason he sent a new, valid address. He doesn't have the ability to delete messages so after sending it, he's allowed and ENTITLED to send new addresses. It's TEKEN's fault if he didn't check the conversation and decided to, 7 days after a new address was sent, send it to an old one that might have been invalid.