A VPS hardware node is not listed in migration targets for Virtuozzo containers, despite all conditions are OK.
The list of Virtuozzo EZ application templates is parsed incorrectly for a new hardware node added on OAP 7.0 version. The issue is known under internal ID CCU-14218.
The issue is resolved in OAP 7.1, perform the upgrade for a permanent fix. After 7.1 is installed, press Update templates button for the affected hardware node in its General tab.
To apply a workaround for 7.0, contact Odin Technical Support.