Does GitLab for Jira Cloud work when enabled for the top-most GitLab namespace?

How would “ for Jira Cloud” integration behave if configured for the top-most GitLab namespace?

For example, if I set up “ for Jira Cloud”" integration for the namespace, would the Jira integration work for all projects in all sub and descendent groups, on any level?

In other words, if I enable “ for Jira Cloud” for the namespace, will it work for the project which has the Jira integration configured and has a valid Jira project key set?

Thanks a lot!