Yeah, it would only update the Id value in the data store for the player.
So, when you call DataStore:UpdateAsync() with that callback function, it will update only the Id value in the data store for the specified player, and leave the plrs value unchanged.
Thanks @ShaShxa and @yo9sa! I was assuming that using UpdateAsync would well update it and not replace it otherwise it would basically just be SetAsync, Thanks for clarifying!
Sense @ShaShxa replied first all set their thing as solution!