I have an 11" MBA. I want to free up some space so I have put my Photos in the Cloud for storage. So is it ok to delete the 12.8GB of data files that are in my library. They are all associated with Apple.cloudphotosd / photo.icloud.shareds. Seems obvious as they should be in the cloud but will I lose them in the cloud as well???? I'm Using Omnidisksweeper to help but although it defines where the files are, it is unclear to me as to what they do.