Change Documents for WBS status change

I would like to activate Change Documents for WBS status changes.

I've already ticked the ChangeDocuments checkboxes for the relevant project profiles in transaction OPSA (both Basic Data & Status Management).

However, if I make a status change to my WBS test case, I can't find any entries for it in table JCDS.

If I select my WBS in CJ20N and check the status display screen from the basic data tab, I see that the ChangeDocuments checkbox is unchecked on this screen.

What am I missing?