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Unreal project keeps changing after upload?

Hi guys I’m pretty new to Unreal, only been using it for a few months.
I’m on a team doing some machinima and I’ve been working on an environment. I upload the Unreal environment to google drive to share with team members but whenever they download it the Project lighting and even a moon emission color are different, or non existent. This has happened every time on this current environment.
Any suggestions? Should I build before saving and uploading? I would assume that simply saving the project before compression and upload would be enough.