New Brevoort Formspring

Hi, Tom, I know you can't go too in-depth with this so a yes/no should suffice. I recently bought a Marvel trade and there was an important one-shot issue missing which was written by the same writer and continued the story of the main series. On further research I found the issue and saw that it had art credited to Malibu Studios. What I'd like to know, is if the Malibu problem extends to Marvel comics which Malibu were involved with in some way? Or was this issue's exclusion just an oversight?