The notes are not kept on cut&paste of multiline cells.

Straighforward, but to be sure I'll write how to reproduce
the issue step by step:

1) Type a couple of lines into the cell
2) Add a note on the same cell
3) Cut the cell and paste it somewhere else

The note is not being copied, and worse if you undo the 
operation it's vanished even from the original cell. You have
to keep undoing until you get back to when you created the note.
To test this, insert some more lines into the cell between 2) and 3).

That's it. I hope it's clear(English in not my mother language).
I used OpenOffice 1.1.0 Italian version on Windows 2000.