[libreoffice-users] removing hyperlinks

I have a small problem in a master document.
I have written (in various stages of completion) 8 chapters of a book 
and use a master document to keep it  orderly.
Now for some reason or other chapter 1 and chapter 3 are miraculously 
double displayed in the master document regular view in navigator under 
Headings. In master view I can see the normal 8 documents (i.e. the 
separate files with the texts of the chapters).
How can I get rid if the superfluous displays as they are displayed in 
the master document. To make it clear: I see chapter 8 (correct) and 
after the end of this chapter I see chapter 1 again (incorrect) and 
chapter 3 (incorrect).
I cannot delete these texts from the master document as they are read-only.
I hope there is a solution.
OS: Ubuntu Lucid
LO: 3.2.2.2.
Joep

P.S I sent this to users@libreoffice.org but it never reached the list

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