Thanks for reaching out on Q&A Forum.
This is the button you will tend to see for rotation/re-generation of the keys and will provide you the new one.
This in turn will expire the older Keys/connection string that was created via the older access keys and also any SAS signature too that was signed using the older access keys.
There is no data loss as part of rotation/re-generation however the application will face connectivity/auth related failure as the older keys becomes invalid. You need to ensure you are updating the access keys / connection string / new SAS generated via new access keys for seamless connectivity.
You can refer to this link as well
https://learn.microsoft.com/en-us/azure/storage/common/storage-account-keys-manage?tabs=azure-portal
Please let us know if you have any further queries. I’m happy to assist you further.
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