Run the following from SQL Management Console
Force Change Detection on Back-end
Update CMTEUP_PublicFolder SET ContentChanged= 1 Where FolderPath = '\PublicFolderPath\'
The below will associate specific PF job to a worker :
Update CMTEUP_PublicFolderJob set JobStatusID = 1, ScheduledStart = GETUTCDATE() where PublicFolderJobID=
Query to set particular WorkerID or even CDWorkerID to a specific job
Update CMTEUP_PublicFolderJob set JobStatusID = 1, ScheduledStart = GETUTCDATE(), WorkerID= yyy where PublicFolderJobID=xxx