To migrate from older versions of VMware Aria Suite Lifecycle, use VMware Aria Automation Easy Installer.
You cannot directly migrate or upgrade a VMware vRealize Suite Lifecycle Manager 2.x environment to VMware Aria Suite Lifecycle 8.12. To upgrade to VMware Aria Suite Lifecycle version 8.12, first migrate your 2.x environment to VMware vRealize Suite Lifecycle Manager 8.8.x to 8.10 and then upgrade to VMware Aria Suite Lifecycle 8.12.