Time Machine doesn't recognize old backup after logic board replacement

[washer]

I recently had my logic board on my MacBook Pro replaced and when I tried to backup, Time Machine did not recognize the old backup on the drive and tries to create a new one. The drive is mounted fine.

Is there a way to continue using my old backup, or do I need to delete it and create a new one?

 

[webgoat]

its possible but takes a lot of terminal commands.. i believe with snow leopard it creates backups based off the uuid and not a mac address so time machine won't be broken after such repairs

 

[GoCubsGo]

After having my entire machine swapped TM did not recognize the backups. I am certain they're machine specific. Can you perhaps try migration assistant in SL?

 

[Jolly Jimmy]

Have a look at this http://www.macosxhints.com/article.php?story=20080128003716101