The above worked for me as well (press F12 to bring up the PCB filter), however I didn't want to move all components simultaneously. What I did was to manually move the inaccessible components one at a time using Edit » Move » Component. When you use this command you need to click on the component to choose it, however since these components are off the screen and you cannot pan or zoom to bring them into view you must click in a blank area to bring up the "choose component" dialog. From there you select a component by its reference designator.