I've seen a LOT of posts from years ago requesting this feature, there is no reason whatsoever for this not to exist and I know it's not that much work to accomplish. Adding a game to collection already removes the wishlist entry, there is no reason I should still be getting alerts for a game I already bought. There is also no reason I should have to wait for that alert to arrive and then manually click through to edit my alert list. Why hasn't this been done?