Changing WP Themes

I have modified the default theme in WP 2.9.2. If I change themes and at some point decide to go back to the default theme, will the changes I made be saved or will I have to modify it again?

Have you made changes to the files in the current theme? If so, the changes you have made will remain even after you have changed to another theme.

The changes however, will not be interchangeable between theme. They are subject only to the theme you have changed.

Thanks,

So if I go back to the default theme, the changes I made to that theme will still be there, correct?

That’s correct.