No 'Premium Upgrade' offering with 'Earn partner' segments? Before I call AS about this, I'd like to ask for The Collective's insight here: Is this an IT snafu or reflection of a stated policy I can't find?

As an elite, if I search routes like ORD/SEA, DEN/SEA, OGG/SEA, I see (as expected) search results...
https://www.flyertalk.com/foru....m/alaska-airlines-mi