Gradle and non-gradle modules in the same project

Hi

Is it possible to have gradle and non-gradle (plain java modules) modules in the same project. I work with multiple modules at the same time. Some of them use gradles and some are just plain java modules that use ant/ivy for build.
If I import the gradle modules (as multi-module project) and then the non-gradle modules, the non-gradle modules don't show in the project view.

Thanks
Anand