Thanks from me too!! I'm doing the same PAL to RPAL and I was told I paid the difference in the restricted and non restricted fees. Just got off the phone with the CFC and was informed this thread is correct, NO FEE !!
currently the CFC is waiving any cost associated with changes or upgrades to a valid licence. There is only a fee to pay if you are a brand new applicant. I went from a POL to a RPAL cost free