Hi Jan,
Thanks for your continued interest in Syncfusion product.
Here I have attached the Migration document which will help you to migrate v.4.4.0.51 to v.5.1.0.51.
http://www.syncfusion.com/Support/user/uploads/Migration Document_5320b292.zip
We have prepared excelent and brief documentation for v.5.1 You can get the documentation from “View Locally Installed Documentation” link that is in the Dashboard and you can refer our online documentation from the following link.
http://www2.syncfusion.com/library5/index.htmPlease refer to this documentation and let me know if you have any questions.
Thanks,
Nagaraj