Flying YYZ YHZ
booked on points
paid for seats 13 AC, 14 AC so kids can each have a window
Airbus A220-300
there is a time change. 5 minutes later.
AC moves us to 13 ACDE

now another email and am now moved to 20 CDEF
called into AC and the agent tells me because of an equipment change
when I look at my original ticket it shows the same A220-300

any thoughts as to why this happened?