The newer version includes all the features that the classic version had so it should be easy to migrate if requires. The general guideline is that if you are using the classic edition of controls in existing products then you can continue to use them. However if you are starting a new project then it is recommended that you use the newer alternative available. Syncfusion will continue to maintain the support classic version of controls for several more years. We will also be happy to provide any required assistance in migrating from the classic edition.