Redmine

I am investigating Redmine, as it has the ability to use subprojects, subtasks and gantt charts. I do have a number of different Trac projects that I want to migrate.

The problem is that the migrate tool wiki is very short on details. It seems to be possible to import a single project, but no mention is made of multiple projects. The bitnami mac os x distribution doesn't work with the importer instructions, so the easy way doesn't work, and I do not want to waste my time trying something that is known not to work.