@alejandrofm the behavior you're describing, where the custom tag disappears after the cluster restarts, might be related to the cluster configuration or the specific settings of your Databricks environment. To troubleshoot this, ensure that the custom tag is being applied correctly before the cluster shuts down and that it aligns with any specified naming conventions or restrictions. Additionally, review the cluster start-up process to check if there's any step that might be inadvertently removing custom tags.