CU Amiga copied the entire AP2 website onto their cover CD without permission. Jonathan Nash and co. sued for copyright infringement, won the case, and CU shut down soon after.
Amiga Active first began years after AP closed. AP ran for 70-odd issues; Amiga Active ran for 30 at the most.
From a journalistic perspective, I always prefered Amiga Format to CU - the quality of the writing was far higher. Except when AF started awarding 80% for even the worst tosh in an attempt to boost the software market, of course, but by that time CU had closed.
Remember, kids: plagiarists never prosper.