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An approach which you can try is to create a SelectedTask property in your view model and bind it to the SelectedItem property of the RadGanttView. This property will preserve the item selected by the user. When you reset the collection you can use the ScrollView
method for an example of the RadGanttView to scroll to a specific location. There is a Scrolling
help article in our documentation which describes how you can set up RadGanttView so that the view is scrolled to a specified location.
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