I wanted to teach my Lapras the move Refresh at our Tutor at our Normal-Type-Gym on our Server.
I tried to teach it without having the 2 Normal Gems which are the price for that attack on our custom tutor, just for fun. It did even show me the screen, where i have to let the PKM forget one move to obtain another. After this screen, an error-message appeared, saying that i could not effort the price. But, when i looked on the attacks of my Lapras, it had Curse removed and Refresh learned.

I hope this information is enough and I thank you in advantage for your response.