Good morning ,
You might be interested in building a project with all the milestones from all the projects. Here is how to do it with a couple of simple steps:
- Create an empty project
- Run an advanced search for Incomplete Milestones that are not in that project
- Save the search as a report
- On a regular basis, visit the report, multi-select all milestones and multi-home them into your project
Not that hard, is it? You could also directly use the report, but at the moment they do lack some features compared to a regular project.