Per Dictionary.com: Today, data is used in English both as a plural noun meaning "facts or pieces of information" (These data are described more fully elsewhere) and as a singular mass noun meaning "information": Not much data is available on flood control in Brazil.
English is a living language
Somehow or the other, I just don't feel right with the words 'those data'. In my 6 years in cyberspace in 3 years in the IT industry, I have never seen that word-combination. It has always been 'that data'.