Who are 'They'? TT had the problem and TT claim to have fixed it, not P8. They have offered to try again now it is claimed to be fixed. What more are you demanding them to do?
"They" are the owners of the web page - Pulse8, it's normal for a company to update their own product FAQ. When I last spoke to Pulse8 on the 30th of June they stated that although they would try a straight FTTC->FTTC migration previous attempts were unsuccessful - they were implying failure was expected.
When did you last talk to Pulse8 about straight FTTC->FTTC migration? And why do you assume they don't know how to update their own web page?