The P35 should not include any class or subclass of PRSI that did not apply during the tax year.
If the employee changes class (for example Class AO and JO) an aggregate total of weeks for all classes should be included on the P35.
If more than two classes or subclasses are involved during the year, you should provide full details on a separate sheet or computer printout showing the classes and number of weeks of insurable employment in each class or subclass.
I am far from an expert in this area, but I do remember in the dim and distant past getting a large PRSI refund for someone who turned 66 that particular year.
If I had to hang my hat on it, I’d venture that there’s no PRSI for the whole year, but it’s a long time since I looked at it.