@
Arkadian - I see that Kovid has helped you solve the problem.
I had a look at your OTT file, couldn't find an OTT to DOT(X) converter that worked, so I used brute force, looked at in HEX, and that gave me a clue as to how to wrangle into Word.
Can I ask how 'well' you know Open Office Writer. From what I can see from that test OTT you haven't used Writer's template feature as I suspect it should be used, which I assume is like Word's templates should be used, given Writer is reverse engineered Word.
Don't worry, you're not alone, most people don't use Word's templates as they should be used.
Let me know if you want to take this fork of the thread (fix the problem at source) any further. If you do then I'd probably first suggest you try
BobC's suggestions. Then I'd probably suggest you try attaching Writer's default template to the document.
BR