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Rather than a dependency being recognized as another open project it is recognized only as an artifact from the local repository. This occurs when on a system with a case insensitive filesystem and the project artifactId differs from a groupname only by case. Imagine you have the following projects open in the IDE: com.foo:Bar com.foo.bar:Baz If you try to add Bar as a dependency for Baz the IDE will frequently fail to recognize that Bar is an open project iff the local repository directory is "~/.m2/repository/com/foo/bar". However Net *will* correctly recognize Bar as an open project if the path happens to be the equivalent (on both MacOS and Windows) "~/.m2/repository/com/foo/Bar" directory.