Cleaning up your local archives will allow for a faster conversion for everyone. You do not need to delete items that are important and you want to keep, but you should remove unnecessary items. For example, many people do not know that a copy of every sent message is retained. These sent items get archived over time, and many people have found they have tens of thousands of messages they do not need to keep.
Contact the Help Desk, 260-481-6030, if you need assistance.