#Post-migration

After the domain name of the source tenant is changed to the destination tenant or the UPN prefixes of source Team email addresses are changed, you can choose one of the following options to migrate the source new or modified data:

If you choose option 1, refer to the following steps to change the domain names of source and destination chat users:

1. Click Projects in the left pane to access the Projects page, and click the name of a project.

2. On the Project mappings page, select one or multiple mappings for which you want to change domain names.

3. Click Post-migration, and select Change mapping domain to change domain names for the chat users. Note that the source domains of your selected mappings must be the same. The destination domains of your selected mappings must be the same.

   In the Change mapping domain panel, the original source domain and destination domain of chat users are automatically displayed.

   

4. Enter a new source domain and/or destination domain for the chat users, and click Change to change the domain names.

   After changing the domain names, the original domain names of the source and destination chat users are updated to the new domain names.

   *Note: If you switch your source and destination tenant domains but do not provide the final destination domain in the migration policy, the domain of direct links and attachment links in source chat messages cannot be replaced with the final destination domain during the migration. To replace these links in the migrated messages, you can configure URL mappings to map corresponding OneDrive site URLs with the current destination domain to those with the final destination domain, and execute the ChatMigrationAssistTool.exe file.