P6.R7 Ressources loading -Allow importing the same resource many time per activity!!

Dear P6 experts;

I'm facing a big problem to load ressources to P6, 

My ressources are assigned to the BOQ Items, and the BOQ items are assigned to the activities  for exemple:

1.Activity Foundation:

      1.1. Concrete (BOQ)

          1.1.1 worker

          1.1.2 Formen,,,,,

      1.2. Steel (BOQ)

          1.1.1 worker

          1.1.2 Formen,,,,,

In this case the ressources workers and Formen are repeated two times on the same activity, and when I'm import it from Excel to P6 only one time of the repeated ressources are imported!!!

So How can import to the same activity repeated ressource with diffrent Qty???

Your help will be appreciated, Thank you all in advance.

Best regards.