The original version of this "meta" tale of a comic book character reading a comic book appeared HERE...
...now here's the same story, with "updated" clothing and hairstyles and a different lead character., but the same supporting cast!
When Seaboard Publishing/Atlas Comics reprinted this tale in Vicki #2 (1975), they did the usual modifications to keep the tale looking "current" that everybody else did with their older teen humor and romance material.
I don't know if Atlas/Seaboard tried to get the rights to Tower's T.H.U.N.D.E.R. Agents, at that point only five years after their last appearance and still-fondly remembered by comics fans!
But, they ended up with
Tippy Teen...who was renamed
Vicki!
My personal opinion is that
Seaboard's Martin Goodman discovered that
Tower had abandoned the negatives/photostats at the printer (whom they didn't pay).
Like Israel Waldman who took similar abandoned material for his
Super/IW Comics line, Goodman took the material (which also had
never been copyrighted, so it was Public Domain as soon as it was published) and reprinted it, changing only the title to avoid a nuisance lawsuit from
Tower (which was still publishing paperbacks) and claim a new copyright on the modified reprinted material.