Dealing with a change in fiscal year almost always requires the assistance of your Adagio Consultant.

To the extent you are going to want comparative statements, you will need a special set generated to account for the fact that Period 1 of next year must be compared to Period 12 of the previous year.

I don't believe there is a way to get incoming batches automatically moved to the Next Year in this circumstance, but Technical Support may correct me.