Yeah, there's some kludgey workaround for this that is definitely 80/20 kind of material...pg_upgrade will generate a script that does progressively more accura

Yeah, there's some kludgey workaround for this that is definitely 80/20 kind of material...pg_upgrade will generate a script that does progressively more accurate re-ANALYZE so you're not flying your early queries totally blind. Maybe look into running that.