737.18.17.4. If, at a particular time, the activities carried on in Québec by a person or a partnership in relation to a business diminish or cease and it may reasonably be considered that, as a result, a corporation or another partnership begins, after the particular time, to carry on similar activities in the course of carrying on a recognized business, in relation to a large investment project, or increases the scope of similar activities carried on in the course of carrying on such a business, those activities or portions of activities, as the case may be, are, subject to section 737.18.17.3, deemed not to be eligible activities of the corporation or of the other partnership carried on in the course of carrying on the recognized business.