Why do files printed in RasterPlus to the DLS not appear in the WIP?

Why do files printed from RasterPlus seem to have printed correctly and are shown in the Archive with a green check mark not appear in the WIP?

Using Kodak DLS Version 3 with the latest release of RasterPlus.

Solution:
In RasterPlus click Edit...Default Queue Properties...Advanced Device.
Select the box "Enable KIAS" so that it has a checkmark. Click OK.
Add a new file to the Print or Hold pane and try printing again. It should make it to the WIP.

NOTE: Do NOT drag a file from the Archive. The properties of Archived Files retain the state that they were printed with and the KIAS will not be enabled.