Cloud files appearing in two locations

Ah my bad for not finding that on a search… I do seem to remember the contentsof my videos folder being copied to the route of Amazon cloud drive which would explain why the other folders now appear there… Am I right in thinking if I move them the entire lot would need to resync? Ah I see that as long as I move on one computer within the same container, Amazon cloud drive in this case, it should sort itself out in the cloud and other clients. What is the simplest way to move files and folders around?

Removed the other questions, bold part answers them.

Thanks for your help.