So to show this .. I went back to my 2019 version (since I fixed it in 2020)...
I took this sequence, added a couple layers to AA Mega Tree, then right click copy model from AA Mega Super Tree and pasted it.
So it pasted the effects including the faces at around 1:30.
Check sequence didnt catch this missing face definition on this prop.
(ignore the bad images .. those are easily fixed up)
I believe this was the scenario I was trying to show you...
(as I go thru all my 2019 sequences looking for f'ups)