Some Niagara Fluid systems are not visible in a packaged project

Previously packaging caused a crash with this system. This was fixed, but now the system is no longer visible when packaged.

1. Create or open any project
2. Enable Niagara Fluids plugin
3. Create a new Niagara System using 'New System From Template' and 'Grid 3D Simple Gas Particle Source'
4. Place the system into the level so that it will be visible by the player
5. Package the Project for Windows
6. Launch the .exe

Expected Results:
The system is visible when the level loads

Actual Results:
The system isn't visible