How do I change the project directory in App Engine Launcher?

I have a project (a version of which has already been deployed) in the App Engine Launcher, and I would like to change the project directory, as I have since moved the project files to a new directory. But, when I click to edit the project, the option to browse to a different directory is disabled.

I am using App Engine SDK 1.5.4 on Windows XP. Thanks in advance for your help.

It looks like this is a known issue (here), but the poster says s/he is 开发者_StackOverflowrunning Ubuntu, not Windows.

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You can always delete (Ctrl+Del) and add the application again its not a lot of trouble.