Trust registration could be revoked from AY 2011-12 even if hit by proviso to sec. 2(15)

IT : In terms of Circular No. 1/2011 dated 6-4-2011, registration already granted under section 12A can be cancelled only for assessment year 2011-2012 and subsequent assessment years; in instant case, assessment year involved being 2009-10, Assessing Officer could not cancel registration already granted to assessee-trust by taking a view that activities of trust were hit by proviso to section 2(15)