In order to do post-layout simulation and layout versus schematic comparison (LVS), you need to do a layout extraction first as an intermediate step.

Left click Editing: Verify -> Extract...

The Extractor dialog box should appear. Ensure that you have specified the rule file (`divaEXT.rul) and the Switch Names is set to blank. Left click OK.

If there are no errors, the CIW window will display "Total errors found: 0" (this may take a few seconds). Now you should be able to see another cell view of the inv named extracted in your Library Manager