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When you use coinbase exchange for receiving bitcoin assets every time bitcoin address will change but don't worry you will get and received your bitcoin fund, I think generate address is not impact with your old address gone but you can still use your old address and can received bitcoin, I ever use coinbase long time and always generate address for receiving bitcoin assets because looks good with new address bitcoin.
Sorry mate,but i wasn't talking about any custodial wallet like coinbase back then. I was talking about a exchange wallet management system and how they maintain every interact with hot wallets and given wallets to users by that exchange. Simple, try to track address and you'll get it. But samething also happened with custodial wallet like coinbase. Also, you can still receive funds of your previous address instead of generating a new address.