Project Status Updated By Full Name field in reports blank for some rows
Why is the Project Status Updated By Full Name field blank in my report?
Project Status Updated By Full Name is only populated if a Status Update is performed on the project, and the Updated On field is populated by either Status Update or modifying a value on the project's dashboard using Edit Profile. For the rows in which the Project Status Updated By Full Name field is blank in your report, it means that that update was a modification of a field using Edit Profile.
If you would like to show only Status Updates in the report, instead of Updated On you can use Project Status Updated On, which also only populates in response to Status Updates.