Bulk Edit Milestones

Is there a way to bulk edit Milestones? That is to say, can I assign a specific Milestone to a group of tasks at once? The setup requires a report to list the tasks across multiple projects: 1. Task Name, for example, happens to match some criteria such that only one task from each project qualifies 2. Each Tasks' parent project is assigned the same Milestone Path When I do this, I get a report of the tasks, one from each project, that I wish to assign the same Milestone. The projects are already on the Milestone Path. If I select one task and EDIT, I can set the Milestone. However, if I select multiple tasks' checkboxes and EDIT, the bulk edit window is missing the Milestone dropdown in the Settings section where it should be. Why? This leads me to think I will have to go through hundreds of existing projects to assign the Milestones. Please say it isn't so!