Hi, Thanks for the patch. I have not read it as I'm on the mobile.
What is the difference between your patch and org-export-ignore-headlines in ox-extra? If you want the functionality in ox.el you should write a solution that uses a property like UNNUMBERED. It's however a non-trivial problem as discussed on the org-hacks worg page. This is, IMO, the right way to tackle this issue, if it is an issue. Skimming the so answer you link to your suggestion is not robust for ignored headlines following a no export headline. Rasmus
