MyCloud EX2 Bi directional usb backup

I have a 3TB EX2, and just got the My passport wireless pro to take on the road. What is the best way to not only backup files from the NAS to the passport, but also make sure that files that files that we load the passport while on vacation get transferred back to the EX2? We will be usung the PLEX function of the passport in the car, and also taking pictures while camping, etc. Should i use the USB Synchronization function, or is it ok to do 2 different copy jobs, one in each direction? Keep in mind that this will be very rare that i back this up, at most once per month. Thanks in advance!

Awesome, thank you for the reply! That’s what i was thinking but wasn’t sure if that was the best way to do it,