Tables ITEMLC and WORKITEMLC contain the current representation of items in Workflow.
They are constantly updated as work items are routed between different queues. As such, these tables provide a snapshot of the current state of items within workflow. ITEMLC and WORKITEMLC do not provide information on the location of a work item at a past (historical) point in time; the workflow log tables WFLOG, WFTRANSACTIONLOG, and WFTRANSACTIONMSG provide such historical data.