I was starting to make a resedrvation for next month CLE-DUB, EDI-CLE and noticed H fares at $200 more than discount. Decided to search for upgradeable BF seats.

I searched for CLE-DUB (7/14), EDI-CLE (7/21) and selected the checkbox for OnePass Reward Upgrade. The next screen displays the following:

! We could not process your request. Please see the message below and make revisions.

! Due to the cities in your itinerary and the OnePass Mileage Upgrade rules, only one flight may be upgraded at a time. Please select one flight to upgrade below. You will have the opportunity to select additional flight for this trip in Manage Reservations once your flight purchase is complete.

Once at that screen no matter if you check each destination individually it repeats the same message.

Selecting no flights to upgrade then presents the following message:
! We could not process your request. Please see the message below and make revisions.

! Please select at least one flight for upgrades.

So you are stuck with the cancel button at that screen. Selecting it takes you back to the make a flight reservation to start the entire reservation over.

Tried it in both Netscape and IE.