To edit numerous projects and change their project assignee or due date, use the Bulk Edit button, located on the top of the Projects page. Keep in mind, this bulk editing is not the same as editing a series and any updates made will only change the selected instances of work.
In order to edit numerous projects at once and change their project assignee or due date, follow these steps:
Apply any filters to narrow down your projects to a specific project name or owner, if applicable.
Select all projects you want to edit by clicking the square checkboxes to the left of the project name.
Click the bulk edit icon at the top of the projects table. A drawer will open on the right side of the screen.
Make the changes to the project assignee or due date and click the blue Update project(s) button in the bottom right corner of the screen.
Note: Bulk editing the project assignee will reassign any tasks in the selected projects that were assigned to the original project assignee to the new project assignee.