Try selecting all the emails from within OE (ctl+a) and then dragging them to a new desktop folder.
This will give you a lot of individual .eml files, and then open this folder on xp system and drag them back into the relevant OE folder.
Huawei P10 review
1995-2015: How technology has changed the world in 20 years
An overview: What leading creative agencies are doing to improve diversity
New iPad, iPhone SE & Red iPhone 7 on sale now
Synology invites you to visit them at Insomnia on 26th – 29th August. Book your tickets now and visit Synology.