Moved countries - lost access to my movies on AppleTV

Hi,

I have a substantial Movie collection in iTunes bought in the Netherlands. I have recently moved to Canada and invested in a couple of AppleTV's to be my main source of watching movies and TV series. I had to switch iTunes account as mandated by Apple which I understand. I initially had access to all my movies but recently I found that movies that I bought in Europe have disappeared. I do understand that because of regional rights you cannot sell movies from region to another but once bought there should not be a limitation to access your own content under the same AppleID as I'm the same user. If I move countries and bring my CD and DVD's is that illegal? Is there a way to get my appleTV's to see all my movies under my AppleID both bought in Europe and Canada stores? If I move back to Netherlands will I lose the movies I bought in Canada?