Reporting help: Journal Entry Report giving duplicate results

I am creating my first journal entry report to be able to report on the delta between an issue entry date and the date the issue is converted into a project and thus assigned a project owner. My results are coming back as four duplicates for each issue/resolving project record. My hunch is that it's because when the manager converts the issue to a project, there are four individuals/teams who get access to the project based on our settings: the project owner, requester and two teams get manage access (from specific template settings). I have a Filter for Journal Entry > Change Type = Add. Is there another filter for Field Name or something else that can filter results to just when the project owner is assigned? I tried Journal Entry > Field Name but that field is blank in the View, thus there doesn't seem to be any data behind it for this scenario.