Yeah I'm sure I could figure it if I was there, very hard from Screenshots. Either keep all your files in Google Drive, or nothing in Google Drive and point the add folder bit to all the folders you want to sync - then to work online with them you'll need to go to 'computers'
Just quickly could you expand the My Laptop and the My Drive and screen shot. I am pretty sure you will have the 'documents' folder in both. Which might be confusing google, dunno
Fuck me, I think I've cracked it. I unwittingly had a document folder hiding in plain sight amongst a bunch of duplicate files. And that was the one where the updates are going (checked the location on the newly synced file and there it was). Deleted all of the copies, and I'm left with one set of files, under Computers, that I assume can be used either online or on PC, and they will be synced. Thanks for the help mate, a box of virtual beers are on their way. Anytime you need advice on my specialist subject don't hesitate to ask 🙂