If at a particular time a particular corporation is an operating corporation of another corporation, all units of the particular corporation owned by, and all indebtedness of the particular corporation owed to, the other corporation are, for the purposes of this section, deemed to be, at the particular time, property that was acquired by the other corporation for use exclusively in the course of its commercial activities.
Where at any time all or substantially all of the property of a particular corporation is property that was acquired or imported by it for consumption, use or supply exclusively in the course of its commercial activities, all shares of the capital stock of the particular corporation owned by, and all indebtedness of the particular corporation owed to, any other corporation that is related to the particular corporation shall, for the purposes of this section, be deemed to be, at that time, property that was acquired by the other corporation for use exclusively in the course of its commercial activities.