Literally all over the place. Burger King brought their old logo back, Pizza Hut did that AND brought their old restaurant aesthetic back. Selling to millennials is apparently just a matter of regurgitation (which I'm fine with).
The toughest design job is being handed something that already works and asked to refresh it completely.
You do what's asked and go the rounds — losing what worked. The reality is minor adjustments might have only beeen necessary to be more contemporary, add copy, etc.