What is the proper way to move my wallet to another computer or to MultiBit?
So if i just import my main wallet using privkey, what happens whitch my change wallet? It is will be lost?
If you import the privkey, you're losing the change addresses. If you can import the entire wallet, that would get all the invisible change privkeys as well.
Or, just pay an address in your multibit wallet from your bitcoin-qt wallet.