Rally: Why does a milestone burnup show points before it was created?

Products

• Rally SaaS

Issue/Introduction

Why does a milestone show points being added to it before it was created?
As an example, the following milestone was created on February 28 but shows points assigned before that date

Environment

Release : SAAS

Component : AGILE CENTRAL

Resolution

Each work item tracks its own points from the moment they were first added, irrespective of the timebox it may be associated with at a later date.