They did for me from AA Platinum a few years ago, and this year when I was 919 miles short of Gold again (mainly due to flying one way on AA and using a couple TACA reward tickets) they sent me the Plata renewal then a week later they sent me Gold and an e-mail saying for 919 miles I should not go without Gold.

That said 100% of my TACA is full-fare C travel and they know that from my record. Maybe that was an influence.

Gold gives you the lounge (which doesn't matter with full-fare C) and more miles per flight on top of COS bonus they also give.