You are missing the point.
Downgraded? Yes, thats what happens when new items gets added and existing items get changed.
Having stats modified drastically down? Yes, thats something that that has and will happen.
Again, Eternal Realm is not immune to change, it can do whatever the f it wants too, except for deleting characters and items. It does not do that and will not do that.
Your character stays there and the items stays there, thats all its about.