In order to export content from different objects, using the openoffice extension, a refresh of the page needs to be issued, between exports, otherwise the exported object will always be the same.

Steps to reproduce

In the Admin Portal, access a folder with several articles.
Using the tool menu, export one item with OpenOffice.org -> Export OpenOffice
Repeat the process with a different object without refreshing the page. You'll verify that the object presented to be exported is the same as before.