Copying data between models

Hi Gurus,

I need help in copying data between models. Below is the scenario.

Model A (Source model)

It contains plan data:

Important dimensions: Facility, Product, Time

Model B (Target model)

Important dimensions: Facility, Product, Time; Additional dimensions: Cost Center, Cost Element

Model C (For lookup while copying data)

Important Dimensions: Facility, Product, Time, Cost Center, Cost Element

Task:

Copy data from A to B and populate cost center and cost element in B by lookup C (key for lookup is Facility, Product, Time)

Please let me know the required steps to do the job.

Can we do it using logic script and avoid BADI?

Which data package should I use?

Thanks.