This is the query that we used:select distinct a.RequisitionID as reqId, c.Subject as TaskName,c.CompletedOn,b.RequisitionEntryID as arrEntryId, d.Name as ServiceName, u.Loginname as 'ApproverId', t.FirstName + ' ' + t.LastName as 'ApproverName', r....

Correct, it's only available before the next task runs.  After the following task is started you can't access the previous performers.We had to use a complex SQL query to get that information after all tasks have run.  This was done in a task that u...

Yes, it's possible, David.  You just have to create a javascript function that runs onLoad and hide that field.