@Greg-Dbc @Bali-Vacation-Homes-www-balivacationhomes-com-Luxury-Villas-in-Bali This issue has been fixed. Please let us know if you are still facing it.

It's because they haven't implemented the BDC messaging API and instead rely on the booking.com email address. If you send the guest a message and they reply, it works OK, but if the guest sends you a new message via the booking on BDC it doesn't link together properly. This has been an issue for me for ages though, not just recently.

@Ryland-Nelson we can add these for sure. I'll have the team save them as feature requests. Thanks.