Hi eng,
You have a strange situation here, I usually expect an increase of power consumption after the layout not a decrease for the same circuit specs. Have you verified with your documentation the switches for the extracted view? For debugging you can run the dc analysis and enter the extracted view and directly using the ADE command annotate DC Voltages or DC operating points will print the data over the extracted, another possibility is to directly select the nodes that you want with Outputs to be saved but usually first you must do in the LSW palette Edit-->Set Valid Layers-->All Valid before you can save an extracted node.
You can start trying different extractions and see how current varies(i.e. first C only, R only,RC...).
Hope it helps,