@daplunk he is asking about .user files the he has custom created not .por file.
@wheelercub I do think there was some old posts where some used a type of special windows short cuts to sync the data folder. Otherwise you need to simply copy the .user files from one computer to another.
If both PCs are on the same network you could use a folder cloning software to sync the folders. Then always make changes on your desktop and sync to the laptop.
Maybe some else has a way but I have a whole custom data set my group/players use. And I have that supported and released the same way the 5e Pack is. That maybe allot of work if you are the only one needing the .user files.