[O] sitemap seems to cache old #+TITLE

[lbmlist]

At one point in the recent past I had a file org.org with
#+TITLE: LBM TCH KB Org

Eventually I changed it to be
#+TITLE: KBorg

no matter what I do, the generated sitemap pick up the old title.

Is this cached somewhere? and how do I get it to change?

Thanks in advance,

Louis