These locomotives were mostly in mainline service till 2007, thereafter relegated to shunting/departmental duties like ALCO-built ones. The last of these locomotives (such as #18473) were condemned by November 2013.
The majority of these locomotives remained in regular service on main lines until 2007, at which point they were redirected to less prominent roles like yard work and internal assignments. The final ones, including #18473, were deemed unfit for service by November 2013.