Is it possible to use the Management History Migration Wizard to import data from several Active Roles servers to one database?
The Management History Migration Wizard was designed for a "one-to-one" database migration for an Active Roles upgrade. It was designed to speed up the upgrade process as the history migration can be quite lengthy - sometimes in excess of 25 hours (depending on history and environment).
The tool has never been tested in migrating several Management History databases to one. This type of scenario is not supported.