According to the Bierbaum's sourcebook (I don't remember if this particular nugget was presented clearly in the comic itself...), the Glorithverse actually came in two pieces. The first iteration of the Glorithverse resulted from the events of v4 #5, and did not include the pocket universe, Superboy, et al. in any way, shape, or form. However, about ten issues later things changed again, […]
Source: wiktionary