I knew MIS systems have hidden costs, but this is a new strange one, even for Capita!!
Appears there is a bug going round that affect your new intake. Basically when you've imported them into SIMS from a CTF or ATF it MAY mark them as being entitled for FSM (free school meals) when they're not - or other lovely FSM bugs. Anyway check out your new intake FSM status, specially if you have cashless catering!!