Er, no
The images were of the 2009 machine and referring to the 1TB internal disc that had been damaged during the transfer. I did indeed re-install 10.8.5 on it and the re-install process included option to re-instate data from a disc of choice. So I re-instated the data from SuperDuperBackup and am now back to square 1!!!!
My inference is that when I swapped the internal drives, and they tried to activate from their respective recovery partitions, the 500GB worked OK as it was going from 10.7.5 to 10.8.5. However because the 1TB drive was trying to go from 10.8.5 to 10.7.5 (using the computer' emergency memory), the recovery partition was destroyed.
I have ordered another Mountain Lion for the 2011 machine, but you have to wait for a slot on AppStore and can't use one's previous 'purchase' on a 2nd machine. When I have that, I will repeat the procedure, ie Install ML and take the option to transfer data from SuperDuperBackup.
I will then erase the drive in the 2009 machine, re-instate the application bundle that came with the 2011 computer from MiscCopies to sell the machine on. I am not sure why it is common practice to sell machines with these bundles as half the software is likely to need passkeys, but.....
At least I now understand a bit more about why my attempted short cut turned counterproductive and a bit more how the current craze for software protection works. A bit of a change from the days when any 2 mac owners getting together copied everything the other had from a floppy!!!