Services completed prior to June 1, 2007 not classifiable as works contract service

Service Tax : If a task/service is completed prior to 1-6-2007 and if part of consideration was received before 1-6-2007 and part thereafter, for part received after 1-6-2007, works contract composition scheme could not be claimed, as task/service completed prior to 1-6-2007 cannot be classified as works contract service