No. Initial new-office approval is limited to at most one year, and an extension requires its own evidence and decision.
Record the actual handoff results
Keep operating and role records as they develop. A forecast or completed business milestone is not proof of every later immigration requirement.
For someone initially admitted in specialized-knowledge capacity, the regulation requires at least six months in the managerial or executive position to qualify for the seven-year total, and approval of the change in an amended, new or extended petition when it occurs. An approved petition for a Canadian citizen can be presented at the port of entry, and the initial stay is granted for up to three years for an existing office, extendable to the seven-year maximum. Do not schedule the American operation around an unfiled petition, and do not assume that a long career with the organisation guarantees the year, because continuity abroad and the three-year window are separate tests and a case can satisfy one while failing the other. Build backwards from the date the U.S. operation must begin trading, allow for a request for further evidence, and put the twelve-month extension review in the calendar the day the first petition is filed.