BmiBaby is introducing a check-in fee of £6 at airport and £4 if you let them know when you book online.
Until the system is up and running then the winter flights cannot be uploaded. (A case of all winter flights will be subject to these charges).
I doubt baby are pulling out of Cardiff as they have sent new barriers over for check-in, along with new cabin baggage measure scales and that Cardiff is one of the places listed on with these check-in charges.
Baby is here to stay and if the 5 a/c from Virgin Nigeria along with the other that is due then i would expect to see a 4th a/c at Cardiff.