I have a number of cases in my project split between two milestones. The milestone with the earlier completion date only has a handful of cases on it. When I look at the Completion Date (Probability Distribution) report, the graph is identical, regardless of whether I choose the earlier or later milestone. I would expect the later milestone, with its additional tickets, and the fact that developers are assigned to work on cases in the earlier milestone, to have a significantly later completion date estimated.
What gives?