metarouter with openwrt! backup/restore

Hello Friends,

i`m made metarouter with openwrt on my RB951.

i want to upgrade to a new machine with supported Metarouter.

ill go straight into the point .

i want to backup my openwrt config and metarouter and restore the same config into the new machine.

i checked forums and tried their steps and i`m unable to do it.

any help would be appreciated.

thanks

Bilal al Khodor-