Times change of course, but during my resettlement the papework stated quite clearly that I was being paid by the RAF and could not recieve money for any work during this period.
And so did mine, but like so many others I ignored that piece of trivia and got on with my new career.
PSF at my last station also very good, one of the SACs there ensured that I took every single day that I was entitled to, and sorted all of the JPA requirements and leaving paperwork for me. All I had to do was clear, bugger off and start my new job.