Map Existing Implementation
If you began the Map Existing Implementation process from a previously created property with variable assignments, you may have encountered an error when attempting to map to variables you had previously assigned. If you overwrite a previously made variable configuration while mapping an existing property, your new configuration will persist and revert any conflicting prior configurations.
Builds: Deploy [Tag Manager]
If you deployed your Legacy property to Launch, the server parameter under the Set Variables Rule Component may have been undefined. You can expect to see this parameter configured correctly.