Part-year residents can plug the whole year’s income taxes for a foreign country into their FTC formula

CRA implicitly accepts the proposition that "the foreign tax credit which can be claimed in respect of a part-year resident is not limited to the portion of the foreign tax paid while ... resident in Canada [and] the foreign tax for the entire year may be claimed as a foreign tax paid."

Neal Armstrong.  Summary of 2013 STEP Round Table, Q. 5, 2013-0480311C6 ("Foreign Tax Credit/Part Year Resident") under s. 126(1).