Power Automate | Upgrade old JWT credentials

Hi all,

our Power Automate flows still use the "old" JWT credentials. I was trying to find a way how to upgrade/migrate/transfer them to the Client ID/Client Secret authentication method. Unforatunately, I did not find any suitable documentation on this. The only documentation I was able to find includes hyperlinks to the developer area, where I can create new projects. But that's not what I need. I don't have any projects. I have a bunch of Power Automate flows, which need to be updated to use the new authentication mehtod.

Means: how can I create  a new Client ID/Client Secret pair baseed on the JWT creds of our paid subscription?

Any hint is much appreciated.