"Page has been modified by another user" error when sites have been moved between site collections

If you move sites by using stsadm -o export or backup a site collection and restore it over another site collection you may find that editing the quick launch navigation within team sites will give you the following error: "The page has been modified by another author " where time is the exact time in which I have pressed Ok to submit the changes. You will also notice that the HEADINGS in the quick launch still point to the old URL but when you try to edit the heading you get the error above.

I found a fix to reset the corrupted headings but it is not ideal and goes as follows:

• Remove all the lists under the corrupted heading
• Remove corrupted heading
• Go to the list settings and add a removed list to the quick launch

This does not happen all the time and may go unnoticed unless you click on a heading of course.