We had a project for Logstash in the pre-production phabricator instance that was migrated to production. This project duplicates the Wikimedia-Logstash project that was created by the bugzilla import.
I don't really care which one stays, but there should be only one project. Possibly interesting is that the Logstash project has project id 1 and also owns task 1. If there is a useful purpose that these could be put to that would be nice. I see that T1: Get puppet runs into logstash is already getting quite a number of mentions due to an assumption that it is still the documentation tracking bug.