I should have asked this in my previous reply.

You can see the other 777-200ER_GE variants? It's only the American Airlines variant that you can't see?

I compared your [fltsim.0] entry with mine and they are the same.

Have you tried do a repair of the 777 Captain? You run the v1.6 upgrade installer (there is no no option to repair, so it just reinstalls), to see if that fixes the issue.