How did you know which of the duplicates to remove?
Here how you do it
..
<uuid>xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx</uuid>
<fsname>xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx|xxxx-xxxx|/dev/xxx</fsname>
..
Just remove
<fsname>xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx|xxxx-xxxx|/dev/xxx</fsname>
and reboot system