Solid from Surface tool does not work with selected TC Surface objects??
And should not convert them in ACIS Solid objects?
This type of functionality should be strictly handled by the ACIS engine. I do not believe it is worthwhile to try to make the TC surfaces work seamlessly with the ACIS type surfaces and to be interactive seamlessly between the two.
As far as I see it if the customer has bought TurboCAD Pro then they will be able to use the ACIS surfaces and solids.