The [docs say](https://docs.microsoft.com/en-gb/sql/linux/quickstart-install-connect-red-hat?view=sql-server-ver15):

>Download the Microsoft SQL Server 2019 Red Hat repository configuration file:
>
>     sudo curl -o /etc/yum.repos.d/mssql-server.repo https://packages.microsoft.com/config/rhel/7/mssql-server-2019.repo

But the repo for the preview was at <https://packages.microsoft.com/config/rhel/7/mssql-server-preview.repo>

Do I need to reinstall from scratch or can I just switch repo and `yum update`?