With the new cresents in place in the database, the legacy style cresents have been retired.

If you were awarded a cresent in the past, you will find that the name of your medal has changed slightly, according to the following:

Gold Crescent == Crescent w/ Diamond Star
Silver Crescent == Crescent w/ Ruby Star
Bronze Crescent == Crescent w/ Amethyst Star

You'll find them already updated on your dossiers