restore vm backup from cluster version 7 to another cluster with version 6

[agapitox]

We have several clusters with different versions pve6 and pve7, but for production reasons we have not yet been able to upgrade everything to version 7.

We have encountered the problem that we can not import a backup of a vm from a host with version pve7 on a host with version pve6.4. We get the following error:
boot: value does not match the regex pattern

They are linux vm's

Is there any possible solution? for us it is very useful to move vms via backup

Thank you very much

 

[Neobin]

Same question came up recently and got answered by the Proxmox staff. [1]

Keep in mind that the support for PVE 6 ends this summer anyway. [2]

[1] https://forum.proxmox.com/threads/error-when-restoring-a-remote-backup.107299
[2] https://forum.proxmox.com/threads/proxmox-ve-support-lifecycle.35755