Can I reconnect Time Machine backup after drive swap on OS X 10.6?

Hi,
I swapped my MacMini's HD few days ago (previous one was dying, had hardware issues). I used CCC and replaced with a hybrid drive. So far, so good. However, when I plugged back the external USB drive were I keep my Time Machine backups, it is not being recognized, TM wants to run a new full set.
I did some research and discovered that TM may use the HD or machine's UUID and that's why it's triggering the new FULL.
I also found this article by Pondini (which seems to be a guru on the topic, lol ): 
http://hints.macworld.com/article.php?story=20090213071015789
But attrb is not working, I guess such command it's not available on 10.6.8 ? ...
How can I reconnect Time Machine backups to the new HD? Or ... I simply cannot and I will have to delete and run a FULL set? I would prefer to keep my old backups, if possible, but it seems that with my OSX version that's not possible without workarounds.
Thanks in advance,

** EDIT **
The trick did not work :-(
I entered into TM and while I can see the old backups , I can't select them or do anything with them. Clearly, they have not been identified as previous backups, hence the reason for Today's FULL.
Ohh boy ... I'm about to give up ...

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