During the migration of user accounts from the old platform into our new system, we only transferred the E-mail and address data. The order history did not come along, but will of course be kept in your current account again.
However we do have a complete version of the old shop running offline, which has been updated up to and including January 5th 2018. Even the current orders (which are still in process) can therefore still be dealt with from the old system.
If you have questions about previous orders, do not hesitate to send us a message.