RM Bridge (TDV) can show internal forces for each part (eg. concrete section, steel section) in a composite section.
In the image above
The “Join” option shows combined internal forces for the composite section.
The “split” option shows internal forces for each part in a composite section.
I don’t know if it’s already available in the Sofistik. But if it’s not, I suggestion to add this feature in the future version.