The update has been a mess for me.
Very first match on the new stage crashed my PS4.
All of my relics disappeared at one point.
Can't change or remove any of the character customisations I've done, but discovered that equipping a preset costume would clear them.
Second match on the new stage didn't even start, it just got stuck on a black screen for ages, and I eventually had to close the game.
So yeah, not too impressed at the moment.
Hopefully it's just the initial extra demand that's causing these issues, and it'll get better over time.