Clearfortheoption.
Perhaps the reason the CAA did not allow you to count P1S towards your P1 total is due to the wording in JAR-FCL. While not exactly small print, what it says for all courses is that the flying hours quoted are training for the appropriate test. In other words, where JAR-FCL states a minimum amount of P1 time, these hours have to be completed on the course prior to the test itself. Without knowing your precise circumstances I cannot state categorically that this is the case, but it would make a certain amount of sense.