The RadCard View has the following features as described
https://docs.telerik.com/devtools/wpf/controls/radcardview/overview

Key Features

    Editing: The RadCardView cards contain sets of data fields that can be edited while the corresponding card is selected. Read more in the Editing article.

    Grouping: The users can interactively organize their data in a way that suits best their needs with a single drag and drop action. Data can be grouped according to several criteria effectively creating a tree of groups with the leaf nodes holding the actual data records. Users can group data by dragging a data field from the drop down menu and dropping it in the group area. Additionally, you can group the data programmatically using the GroupDescriptors collection of the corresponding collection view. Read more in the Grouping article.

    ...


The Demo app starts with RadCardView in FirstLook example, Grouped by Title.

Using the demo app change a Cards details Title and the Card does not move into the "new" group" therefore leaving the Cards in the wrong groups after an Edit.