I can't find the "time-modified" augment in 4.29.1F: https://github.com/aristanetworks/yang/blob/master/EOS-4.29.1F/experimental/eos/models/rpc/arista-rpc-netconf.yang
But as per Sander, it seems it's still there. Anyway I'll update the device in th...
The attribute is defined in a particular yang model, but it's augmenting:
augment "/nc:get-config/nc:output"
and it seems NSO is expecting a "clean" output without the time-modified attribute
My only idea now is to update the device OS from 4.25.1F to 4.29.1F which is target for customer and doesn't seem to have the "time-modified" attribute in the yang models