Default folder when importing/exporting test suites

The default folders where one end up when importing and exporting test suites does not make sense. On windows these are "Users/username" and "Users/username/Documents". Preferred solutions would be, to avoid a lot of folder navigation in the file dialog.

Project file folder

The last used folder (used during import/export)

Additionally it would be great if it would be possible to import multiple test suites at once.