The downloaded facebook archive has a messages.htm file in it with my facebook messages. But I know for sure that a lot of them are missing. My top conversation with about 65k messages has exactly 10000 messages in the messages.htm file. At the end of this conversation it says: We were unable to download the remainder of this conversation.
In the past you had the ability to download an extended archive of your facebook data but that doesn't seem to exist anymore. Is that right?
So how can I get the messages.htm file containing ALL my facebook messages?