I read thisas EM can't show 1) Partner 2) Class O even on UA 3) Class I even on UA 4) Class X even on UA
Did I misread?
My that is a tortured reading of that statement.
The word "partner" modifies all that comes subsequent to it, including the dependent clause that follows the comma, which explains the independent clause that comes before it.
Thus, EM cannot show partner award class O, partner award class I, and partner award class X.
Thus, EM does not show LH F awards, LH J awards, or LH Y awards.
Thus, the only thing EM can be used for is UA
awards/loads, and/or
loads on partner-operated flights.