When attempting to upgrade Aria Operations 8.18.6 or 8.18.7 to VCF Operations 9.x via LCM the product version to start the upgrade does not get populated in the LCM admin UI
An upgrade from VMware Aria Operations 8.18.6 to VCF 9.0.0.0, 9.0.1.0, or 9.0.2.0 is not permitted as per VMware Aria Operations 8.18.6 Release Notes
Upgrade to VCF Operations 9.0.x is supported only from Aria Operations 8.18.5 and below as per VCF Operations Upgrade Path
Supported Upgrade Paths: