The two-year trend by record labels toward honoring multimillion-unit sales of catalog product continued in the November Recording Industry Assn. of America certifications issued yesterday.Atlantic certified the 22-year-old “Deja Vu” by Crosby, Stills, Nash & Young for sales of 7 million albums and the slightly more ancient “CSN” by the trio, minus Neil Young, for moving 4 million units. Both discs were released in 1970. Catching up fast with the Crosby and other collections are Billy Ray Cyrus, whose “Some Gave All” is now at 5 million Mercury units since its May release, and Garth Brooks, whose Liberty Records release “The Chase” is at 5 million units since September. Brooks also had his “Beyond the Season” on Liberty certified for sales of 2 million units. Other multiplatinum marks attained in November: Guns N’ Roses had moved four million units of “Use Your Illusion I” for Geffen; En Vogue’s “Funky Divas” has hit the 2 million mark for Atco/EastWest Records; and Eric Clapton’s “Unplugged” has moved 2 million Reprise units. A&M Records certified Cat Stevens’ “Greatest Hits” for 3 million; the Police’s “Synchronicity” for 3 million; the Carpenters’ “Singles 1969-1973″ for 4 million; Bryan Adams’ “Reckless” for 5 million; and Janet Jackson’s “Rhythm Nation 1814″ for 6 million. Cyrus duplicated his record success on the video side, hitting the multiplatinum mark by moving 300,000 units of his self-titled Polygram Music Video release.