Found the answer here: https://lists.gnu.org/archive/html/emacs-orgmode/2011-01/msg00292.html Sorry for writing before looking through the archives carefully. Best wishes for everyone. Vikas On Sun, 20 Jun 2021 at 16:26, Vikas Rawal wrote: > Hello, > > org-collector.el seems to fill "0" for properties that are inherited just > as it does for properties that are not defined for a particular headline > (for which also, 0 is poor choice; nil would have been better). This should > not be the correct behaviour. Or is it intentional, and I am missing > something? > > Thanks and best wishes, > > Vikas > > Org-mode version: 9.4.5 (9.4.5-29-gc43041-elpaplus) > >