I have two app service plans - a free on and one on a Standard pricing tier. I have one app service I would like to move from one of those app service plans to the other. I have made sure that (for now) the app service plans and the app service are in the same resource group. The are also all in the same geographical region. However, when I use the 'Change app service plan' option in the app service, I get the message 'No App Service Plans found'. I've tried scaling the Standard one down so that it matches the Free one but it didn't give me the option then either.
Please can someone explain what needs to be done so that I can move one app service to a different app service plan?