ca40A forrms are for getting a rating of an aircraft under co-pilot category
so you dont need them as you will be getting your 152/172/pa34/etc rating under PIC
and i did my whole IR flight test in canada and acquired IR rating on my canadian cpl too
but still i had to get the performa printed on school's letterhead
and what you are saying is yes still excepted by dgca
to get the performa of the IR certificate and all other documents to be submitted to DGCA, please visit this site
conversion documents format - Indian Commercial Pilots Network