How to SYNC content librarys on 2 PCs

I have to use a seperate laptop to download content from the marketplace because my workstation PC has very bad net connection for some reason, if I copy files from my UE vault on the laptop in Programfilesx86 to my vault location on my workstation, they do not register in my library. Is there a way to get the transferred content registered so that Launcher knows not to download again?