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When you upgrade an Avaya Aura® application from release earlier than 7.0, existing license files become invalid. You must rehost licenses after the upgrade.
You must rehost licenses in the following scenarios:
Upgrade: During upgrades, you must setup a new virtual machine with new UUID and then restore data on the new virtual machine. When UUID changes, host ID also changes, and any existing license files become invalid.
Migration from System Platform to Appliance Virtualization Platform or customer Virtualized Environment: The host ID changes during migration.
Change in IP address: The host ID also changes when the IP address changes.
VMware cloning of WebLM: UUID changes during VMware cloning. Therefore, host ID also changes.
In customer Virtualized Environment deployments, you do not need to rehost licenses for vMotion moves.