You may encounter two basic scenarios with the ActiveReports license migration:
Development environment
To use ActiveReports development environments, you should buy a corresponding license.
Run-time environment
A common run-time license is embedded into the application with a general .NET mechanism - the licenses.licx file. You should update references in the file to use new ActiveReports versions.
Note: ActiveReports allows generating the embeddable license resource .gclicx that you should regenerate manually for any new ActiveReports version.