Export module does not keep pagetree configuration
In the Import / Export module, I try to select some tables for export. Then I click on "Update" and my selection is gone, but the preview shows all the data I selected. When I click "Update" again, the preview only shows pages.
This is the same for "Include relations to tables" and "Use static relations for tables".
The states of the drop down menu "Levels" and of the check box "Show static relations" are saved though.
I was able to reproduce this in 4.4RC2 and in the current trunk.
(issue imported from #M14810)