This page is available only if you have selected an .xmi file extension on the first page. Here you specify which instances of the file are to be imported.
On each project line, you can see the number
of instances contained in the file. Click the + symbol
in front of the project to display its instances. If an instance exists
in the target location, its icon is displayed with an overwriting symbol. It will overwrite the existing instance if the Overwrite
existing instances option is selected on the first page.