Sorry for posting again, but I resolved my problem and I may be able to resolve yours too. It appears that my previous upgrade attempt did not actually go through.
When I logged in again on launch.stellar.org, my original account recovery code still gives me "invalid code" but my account username/password worked. A new public/secret key pair was generated, and this time when I clicked "upgrade" an additional confirmation code was sent to my e-mail address. With this code I was able to successfully upgrade my account, and the XLM appeared in the new wallet generated and is visible on the account viewer.
I unfortunately did not figure out why my original account recovery code stopped working, but I achieved the end result desired--an upgraded account. Maybe simply try running the upgrade again? Just make sure to save the new key pair as they were different for me when I ran the upgrade again!