Hi Corbel,
you have a set of extractors for the plan-data
eg. for Cost-Centers its 0CO_OM_CCA_1
0CO_OM_WBS_1 for WBS
But all these extractors are not available in Delta load - so you have to check how much plan data you have and which filter you can use just to be sure that the load is not too time consuming.
Hope that helps, - but question would fit better in BW forum.
andreas