Originally posted by Black bolt zIn Marvel, most alternate universes have a numerical designation (even What Ifs) -- thus they are canon/in continuity to Marvel as a whole.
In Quasar #30 Quasar flew into alternate universes to retrieve people for a watcher. Are the universes he flew into in a canon comic book non canon?
That said, the universes Quasar journeyed to in his search for Living Laser in the issue you mentioned are absolutely canon -- Uatu even referenced their numerical designation before sending Quasar on his mission. In fact, many of those universes appeared to be from What Ifs.