[chef] Lost node atributes. Chef version: 0.9.8

[Alexander Halkuziev < >]

  Hi, everyone!
I'm using "chief" for install some packages and deploy user data on rackspace 
cloud servers. After node registration i can use node attributes "cloud", or 
"rackspace" for node ip addresses parsing. I didn't update chef-software on 
server and clients, but now when i'm trying to register or re-register node i 
couldn't find these attributes. Could you please help to understand how does 
chief determine these attributes like "cloud" or "rackspace" and why they 
disappeared? 
 Chief server and client version are 0.9.8. RHEL 5.5 (final). Ohai - 0.5.6 
version.

Thanx.