Finvasia's VWAP table starts at 9:12 now. So we have to add 1 more minute to time shift so that backfill proper.
Include this line in RTD1.format file
# $TIMESHIFT -0.01666667 #this for 1 minute add for each minute
# $TIMESHIFT 0.03333334 #this for 2 minute
$TIMESHIFT 0.05000001 #this for 3 minute
Edit - Keep Start time as 9:12 instead of default 9:15 while doing backfill.