This is not the first time that a change of FOI has caused grief by having a different interpretation of the legislation from their predecessor.
Usually the poor sod on the receiving end just bites the bullet and complies,
however, I suggest that there is always the option of going further up the chain of command and getting a ruling from head office.
I would have thought that there was a basic principle here that a person who has complied with the directions of an FOI cannot be made to change that at the direction of another FOI. CASA should consider that in cases where a FOI believes that the wrong interpretation of legislation has been applied that a ruling should come from higher up the food chain than the FOI level.