STEPS TO REPRODUCE
- Go to Sandbox.WebHome and modify its content
- Go to Administer Wiki > Content > Export
- Click 'none' to remove all selection from the default filter
- Click on 'Sandbox'
- Click 'Export'
Only the pages related to Sandbox space and 'package.xml' page should be exported:
There are exported also the following pages:
I've noticed that after selecting 'none' (Step 3) the XWiki space appears to be non-selected, but after click on tree node corresponding to XWiki space, the pages 'Admin.xml' and 'SearchConfig.xml' are still selected (valid also for 'NotificationEmailHourlySender.xml' if expanding the Notifications tree node).