You can auto 'uplink' the clearance flight plan to EFB, BUT currently it will not accept vectored departures or arrivals
Also make sure that on the fly now screen that you untick the bottom box (include SID STAR), otherwise you will get an error in EFB.
(http://i1264.photobucket.com/albums/jj491/alpha687/fly1_zpsasgnpvgh.png)
We are currently working with EFB Developer to get a fix so, EFB will accept ALL flight plans from ProATC/X, including any changes to the flight plan during the flight.
Make sure that you add the EFB uplink folder path to ProATC/X. Options > Folder-Paths >Add
Not sure of the time frame when this will be implemented.
Not to long !!