Custom Alarm sounds removed?
The folder Media is the where all the Sound files are actually stored. Inside Media, it has its own Alarms, Notifications, and Ringtones folder. These are the folders where each respective sound file belongs. 

In my case, I wanted to create a custom alarm. I thought it would be as simple as dropping a sound file in there, but it wasn't. THERE'S A TRICK. In order for the Android phone to recognize your file as an actual alarm, the file must have Alarm appended to its name.

Example : If your song/file name is Unwell.mp3, then you have to rename it to Unwell Alarm.mp3. 

Only after you include the Alarm in the name will it become an Alarm.