Do you know, that… ?
In situation, when while creating exploded view no objects are visible (or in assembly – component), You can use the mode Select another. You can also prepare display states or work in section…
But you can also use a clever solution.
In the first step, I drag the objects, which I can mark. As I wrote, I still want to shoot four additional objects, which you cannot see. After dragging, do not approve the entire shoot.
Then double-click on the step visible in the operation window, thus editing it. The shifted objects remain exploded at the time of editing, but previously unseen objects were exposed.
Now select all the necessary solids (previously hidden – now visible) and be sure to press the button Apply.