Is there a test on this one? If not, just self certify the thing & get paid.

You are going to have to study up again anyway before you fly the line with the new call outs. Procedurally, there is not much of a difference except for the cold weather operations, which I use as an opportunity to give myself a little one day recurrent yearly in October regardless.

Just be glad you did not lose your vacation and get to enjoy a month at the Comfort Inn for another Type and a pay cut, with the expectation of getting displaced again within 6 to 8 weeks.