During 1998, the group played a national support tour with Ozzy Osbourne and late in the year Buckley was asked to leave due to personal issues, opening the door to Adrian Herbert. Segression toured with Strapping Young Lad soon after, and with this new line-up, Segression then headlined one of the first annual Australian Metal Festivals Metal for the Brain.
In 1998, the group embarked on a national support tour alongside Ozzy Osbourne. By the end of the year, Buckley was removed from the band due to personal issues, making room for Adrian Herbert. Following this lineup change, Segregation toured with Strapping Young Lad and subsequently became the headliners at one of Australia's first Metal Festivals known as Metal for the Brain.