SYMPTOMS
Is it possible to migrate VEs from 3.5.1 to 4.0 and vice versa?Answer
It is possible to migrate VEs from Virtuozzo 3.5.1 to Parallels Virtuozzo Containers 4.0.Note: It is necessary to run Parallels Virtuozzo Containers 4.0 in compatibility mode.
But it is not possible to migrate containers from Parallels Virtuozzo Containers 4.0 to Virtuozzo 3.5.1