Hello AlmaLinux,
first of all, thank you very much for your great work and dedication! 
We happily use AlmaLinux in both our virtual machines and Virtuozzo Containers.
Distribution upgrades within VMs, such as from AlmaLinux 8 to 9, are now really feasible thanks to your Elevate tool.
However, unfortunately, there is currently no way to upgrade within Virtuozzo Containers. While Virtuozzo itself provides tools to upgrade CentOS 7 to AlmaLinux 8 - almaconvert8 (10.5. Converting Containers with almaconvert8 | Virtuozzo Hybrid Server 7 User's Guide), there is no way to upgrade containers from AlmaLinux 8 to AlmaLinux 9.
Now, I wanted to ask if you might see a way to support Virtuozzo Containers in Elevate?
This would significantly simplify the lives of many Virtuozzo administrators …
Perhaps you see a possibility in this direction? 
Thank you very much, best regards from Tyrol
Andreas