Changing App Store region questions

Hi,

so I moved from Sri Lanka to the States and need to change my app store country.

I know you have to unsubscribe to everything, which I did. With the intention of resubscribing on the 31 Dec (when my subscription ends). However i'm worried that because I unsubscribed to my apple music that all my music, songs, playlists, etc.. will disappear.

So i'm just trying to figure out if that is whats going to happen and how I can avoid that.

[Re-Titled by Moderator]