A deemed year end does not arise under s. 249(3.1) (re loss of CCPC status) if a s. 89(11) election has been made

If a CCPC has made the s. 89(11) election not to be a CCPC for certain purposes including s. 249(3.1), this of course means that s. 249(3.1) will not apply to give it a deemed taxation year end if two public corporations acquire a majority of its shares (so that it then ceases to be a CCPC for all purposes).  As intimated by CRA, this point is relevant if the two public corporations are not a group, so that s. 249(4)(a) also would not apply to produce a deemed year end.

Neal Armstrong. Summary of 27 March 2014 T.I. 2014-0523171E5 under s. 249(3.1).