Moving ps4 account from 1 blizz account to another

I have 2 blizzard accounts. My main account is connected to my ps4 and has twitch drops from over the years that i want to keep. my second one has illidan genji from the blizzcon ticket and i would like to bring it to my main. If i unlink my first one and link the second, will I lose the twitch drops? also would i even be able to claim illidan genji at this point? I want to deal with this now so i can safely transition to ow2 with my main ps4 account on my illidan genji blizz account + twitch drops from old blizz main. sorry if this didnt make sense english isnt my first language.