When cross-company data sharing for product Feature enabled, the storage dimension group and tracking dimension group of one item will be updated across all shared entity and controlled by the code logic in class:ecoResTrackingDimensionGroupItem_DataSharingTableEvents::EcoResTrackingDimensionGroupItem_onUpdated and ecoResStorageDimensionGroupItem_DataSharingTableEvents::EcoResStorageDimensionGroupItem_onUpdated

If one item requires dimension serial number be active and is financial dimension, all the shared entity will be updated to the same.

We would expect that storage dimension group and tracking dimension group of one item are kept in specific entity and there will be an option to share it or not. In AX2009, the groups assigned to an item are shared. But the parameters within the groups are entity specific. The alternative to achieve the future state is allow for the dimension fields on a released product to be entity specific