[2022] So no pvp exp in OPR for the losing team in the next maintenance?

There will be adjustments incoming in the next patch:

PvP XP and Salt rewards are now more generous in OPR and Arenas. Both are now awarded for winning Arena rounds even if the overall match is lost. We are also adjusting the daily cap at 40 matches per day or approximately 3 hours of daily PvP Arena matches. After 40 matches in 24 hours, we will reward players 25% of the original PvP Salt and PvP XP rewards. This keeps it possible to play for as long as you want while more optimally rewarding for the first 3 hours daily.