How to consume forecast across Orgs

Summary:

We have forecasted at Demand Class, Customer, Customer site, org and item level using demand management. Forecasting bucket is monthly.

We are feeding this to Supply Planning. There are some scenarios, where forecast is at WHS A, but due to stock unavailability, we ship it from WHS B. In this case, once the SO are collected, we see that forecast at WHS A is not consumed. I have set the forecast consumption level as Demand Class.

This is a typical business scenario when the fulfillment WHS is changed during the fulfillment time. How can we make sure that the forecast is consumed, irrespective of the fact that where it is shipped from. The SO has the same demand class, customer, Site and item which was used for forecasting.