Working with a collaborator, they noticed that VA Class ancestry is no longer supported.
As an example, the following query now returns 0 records:
select * from vocabulary.concept c
join vocabulary.concept_ancestor ca on c.concept_id = ca.ancestor_concept_id
join vocabulary.concept cd on ca.descendant_concept_id = cd.concept_id
where c.concept_class_id = ‘VA Class’;
I think the last time this was supported was Oct/Nov 2018 but I can’t find an exact reason why it was removed and what we should be doing instead.
Scanning a few forum posts I see mention of VA Class no longer being supported or maintained.