[libvirt] save-image-edit fails to change the memory configuration of the image

Hi, I see the below error when i change the memory. virsh save-image-edit /MANAS/rhel7VM1-running-save2 --running error: unsupported configuration: Target domain max memory 4194304 does not match source 2097152 Failed. Try again? [y,n,f,?]: n error: unsupported configuration: Target domain max memory 4194304 does not match source 2097152 Any idea why is this disallowed ? Thanks, Shiva