Yesterday, I had to change the return leg (LAX-IAH) of a Y class reservation leaving today and returning on Friday. At that time, there were no Y-up spaces available, so I was assigned a seat in back. In reviewing my reservation today on CO.com, I had not been automatically upgraded (although the auto upgrade option was shown as "On"), but a Y-up upgrade was shown as available. I was able to select the Y-up upgrade option and I was moved into First (yea).

Should this upgrade have been automatically processed or do I have to remember to check the web site to try grab a Y-up upgrade before the 24-hr battlefield window?

P.S. I'm Plat elite, so I think that I would have gotten the upgrade anyway under the battlefield hierarchy.