Hi,
I am not sure why you are using xclip to extract the text, but I did a
small experiment where I saved a copy a of a LOW document as RTF (Save
As... then RFT format) and I was able to get a reasonably good looking
document when I opened the resulting RTF file with MS-Wordpad.
I am, however, using LO 5 on Fedora which could explain why I get
better results than you.
I hope this helps a bit.
Regards,
Rémy Gauthier.