I tend to work on multiple concurrent projects that follow the same template (same tasks and subtasks with same dependencies, just different dates). Currently I create a separate copy of a template .planner document for each project. This is fine for each individual project but makes it difficult to see different projects in relation to one another.

I would love to have all of my related projects in a single document, but since there seems to be no way to duplicate a task, doing this would require manually re-creating every task and sub-task for ever project, which would be a large amount of effort for projects this size.