Not sure what version this might have changed or if there is a way to fix. Previous version (2015) I don't recall the PSV size in the BOM being reversed. On (2019) it is.

To maybe simplify when you go to component edit on a PSV it will have "inlet x outlet" However on the BOM generated from isogen it has the "outlet x inlet". Is there a way to fix this other than manually changing the face of the iso?