This may sound silly but i honestly don't know the answer.
My friend quit uo before ML came out and gave me his account. I didn't need it at the time so i've been letting it sit deactivated since. If i reactivate it and upgrade to High Seas will it give me all the content of ML/SE/SA and HS?
For some reason i'm thinking ill have to buy SA and HS but i can't seem to find anything that says yes or no.