The Migration Tool enables you to upgrade an XML Schema release subset to a newer version. This supports the process to update an existing exchange to use a more recent NIEM release.
Migrations may only be made over consecutive releases. It will be necessary to run multiple migrations to convert to a non-consecutive release. For example, to migrate a 3.1 release subset to 4.0, two migrations must be made: 3.1 to 3.2, and then 3.2 to 4.0.
The migration tool only migrates release subsets. Local NIEM schemas must be updated manually.