16 year old’s DLA converting to PIP - parent’s CA stops

Son gets DLA (high rate both components) and his claim goes in to PIP conversion because he’s turned 16.

Parent’s CA stops with knock-on consequences for HB, and probably eventually CTC too.

Enquiry to CA brings the information that ‘DLA has stopped’ so CA must stop.

Parent has already been told, correctly, by PIP office that DLA carries on till PIP is decided.

A complaint has already been launched and CA asked to get their act together - but I wonder if this is just an isolated mistake or if anyone else has seen it happen?