Changing the Level Streaming method will remove Levels from folders they were placed in

Changing the Level Streaming Method of a Level thats inside of a folder will remove it from the folder. Occasionally once all Levels have been removed from a folder, the folder will delete itself.

1. Create or open a 4.19 project
2. Create a few Levels and add them to a main Level through the Levels tab
3. Create two folders and add the Levels to them
4. Change the Level Streaming Method of any Level

Results: Levels move out the folder

Expected: Levels stay in the folder