Adding to existing C++ Enum does not update blueprints using the enum

Workaround for changing C++ enumerations:

  1. Close the editor.

  2. Make the enum change in your IDE (Add, Remove, Rename or Reorder)

  3. Delete the Binaries folder in your project.

  4. Recompile the project through the IDE.

  5. Reopen the editor and everything will be alright.

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