Import a tree node structure

[karelt]

Hi,
I have several trees of nodes I would like to import into UR in such a way that they do not appear as imported files but rather a structure of items in UR. I think I know how to do it (via OML), but there is a catch: The text of each of the tree nodes is rtf formatted, it is not just a plain unformatted text.
Of course I want to keep the tree node structure from the old notes in UR too.
Any idea how to achieve that, pls?

Many thanks in advance for any kind help!

Best regards
k