I created a recurring event for every Friday of this month. Then I went to the Week view and it shows up correctly. See image 1.
Now if I drag the event to the next day, it does not move the recurring event to the next day.Infact it creates a copy of one instance of that the current event and puts on the next day. See image 2.

You can see the same thing when you change to Month view. See image 3
Now if I drag it back over the previous original recuring event then it disappears.

This was not an issue in version 3.2

Hi,
all business logic for displaying recurring events is realized in the web-sample (not in the control). The logic was not changed since version 3.0 You can modify it for your own needs. Class "Recurrence" is defined in "Recurrence.cs" file.

Each item has StartDate and each recurrence has StartDate. When you drag item from Friday to Saturday only item's StartDate is changed in web-service method "UpdateItem" (recurrence StartDate remains the same). You can update recurrence StartDate in this method if you want. 

Hope this helps.