SSAS : one dimension instead of 3 times the same

Question

I want to make a cube that show, for each factory, how many units produced and how many units transfered between 2 factories by month.
I have a DimFactory dimension that represents factories.
My 1st fact table (FactProduction) is what have been produced in a factory. So I have a FactoryKey that links my FactProduction to DimFactory.
My 2nd fact table (FactTransfer) is what have been transfered (i.e. shipped) between 2 factories. I have 2 foreign keys: FromFactoryKey and ToFactoryKey.
Both are linking my FactTransfer to DimFactory (so for each record I have a FROM and a TO).
I created a cube that uses both fact tables but of course when I do so, I have to use 3 dimensions (each of them being DimFactory):
Location      (FactProduction.FactoryKey -> DimFactory.FactoryKey)
LocationFrom  (FactTransfer.FromFactoryKey -> DimFactory.FactoryKey)
LocationTo    (FactTransfer.ToFactoryKey -> DimFactory.FactoryKey)
I would like to use only one dimension (Location) and using Calculated Fields I would have 3 measures:
Quantity Produced
Quantity Transfered From
Quantity Transfered To
So for the currentmember in DimFactory I would have 3 columns.
MONTH    |    FACTORY        |    Produced    |    TRF FROM    |    TRF TO
===============================================================================================
JANUARY        NEW YORK        45,600            23,450            12,344
FEBRUARY    MIAMI            20,200            12,233            5,673
What kind of calculation I must do to get these measures (and be able to use one DimFactory instead of three)
Thank you for your help

Answer 1

I found a way to do what I was looking for, by splitting my records in half.
So my fact table now has 2 records for each transfer, with only one FactoryKey with a column telling what kind of record it is (TO or FROM).
That way I can have a calculated field saying "if it is a TO, then TRANSFER IN QTY is QTY else TRANSFER IN QTY is 0 and same logic for a FROM"
In my cube I have only one dimension (DimFactory) and for each factory I have 2 columns : TRANSFER IN, TRANSFER OUT.