Exporting SciChartSurface to bitmap blocks UI thread

Dear SciChart people,

when trying to export a SciChartSurface instance present in a view (i.e. modified by zoom and series visibility settings etc. done by the user in the UI), it seems that its member functions
ExportToFile
may only be called from the UI thread – invocations from a background thread yield an InvalidOperation exception

So for the period of exporting, the application stays unresponsive even when “useXamlRenderSurface=false” is set in the call.

This does not change when trying to clone the surface, using a derived SciChartSurface class (still in in the view) that allows for cloning (cf . the SciChartEx class in the “CreateAnnotationsDynamically” SciChart example): calling CreateCloneSurfaceInMemory is still only allowed on the UI thread.
If one accepts this, but tries to continue with a background thread on the cloned surface’ s ExportToFile instance, it still mandates using the UI thread, so no escape …

Any ideas to go away from the UI thread in this scenario?

Thanks a lot.