Does the Project to Planner Sync Tool work with Project Professional?
The sync will work if you are using Project Professional and save/store your projects in Project Online.
What are all the fields that are synced and which ones can be changed on either end?
By default, the following fields can be changed on either end: Task Title Task Start Task End (Due Date) Task % Complete (Progress) Task Description (Notes) Task Bucket Name Task Priority Task Labels Task Assignments
Can someone not assigned to a Plan task alter the task?
Yes, Planner does not have security controls to prevent this.
What happens if someone on the Plan side deletes a Task?
The sync solution will not delete tasks on either end. If a Planner Task is deleted the task-level sync field in Project indicates “Deleted” If a Project Task is deleted the planner task title is appending with “|Deleted”
What controls are in place for altering Plan tasks?
There are separate configuration options to prevent Planner Task updates from updating: Project Task Title Project Task Start and Finish Project Task % Complete Project Task Assignments