Board Thread:Questions and Answers/@comment-32523197-20170708100957/@comment-4651179-20170710031935

In the case of Invincible Iron Man, it's because when they first renumbered, they didn't count the last three issues of Iron Man Vol. 4 (which were "taken over" by War Machine during Secret Invasion, but technically speaking, were still under the Iron Man indicia title). It seems they went back on that decision for this renumbering.

As for Incredible Hulk adding all of the Tales to Astonish issues, it's because for its #102 issue, the series was renamed to Incredible Hulk. Because the book kept its numbering, all previous issues still belong to it.

Something similar will happen if there's a Captain America renumbering. For its #100 issue, the series Captain America co-featured with Iron Man (Tales of Suspense) was renamed to Captain America with all of its pages dedicated to him. Meanwhile, Iron Man moved to his own book, Iron Man.

This is also the reason why Invincible Iron Man doesn't include past Tales of Suspense issues, because they all belong to the numbering of Captain America.