Photos Not Syncing from Mac to iPad

OK - I have set a Master Photo System Library on my Mac. I have imported a number of photos that I want synced on my iPad and iPhone and created a number of albums. I went into Systems Preferences and then iCloud where i turned on iCloud Photo Library and Photo Streaming. I then went to my iPad and Settings and iCloud where I turned on the same settings on Photos.

The gear spun, the line moved saying it was syncing photos until it finished. I opened Photos on my iPad expecting to see the same photos and Albums as I see on my Mac - wrong -

Actually, I have lost a number of pictures I had on my iPad which I expected but nothing was added - no organization I had set up on my Mac or ANYTHING - It was like a giant waste of time.

Am I doing something wrong or am I expecting more than is to be delivered?

Thanks

Adrian