Hi, Ever since the PS5 upgrade we have struggled to play with our PS4 friends. A PS5 console player can join a PS4 console player on the PS4 version of the game. However a PS4 console player can't join when invited by a PS5 console player on the PS5 version of the game. Fine you say, just play the PS4 version of the game! However we can't transfer our PS5 progress to the PS4 version of the game we can only transfer our PS4 progress to the PS5 version of the game. It's basically been a nightmare and caused my friends to stop playing the game - any workarounds so i can have only 1 version of the game downloaded (the PS5 version - i do enjoy playing the XL Horde mode) and be able to play with my PS4 friends on campaign/challenges/original horde mode?