> If you don't have this command directories get bind to management
class that has shortest retention time (or something like this);

That's not what the manual says Joe

"The dirmc option specifies the management class you want to use for
directories. If you do not specify this option to associate a management
class with directories, the client program uses the management class in
the active policy set of your policy domain with the longest retention
period. It is recommended that you select a management class for
individual directories that retains directories at least as long as it
retains the files associated with them."
 
Geoff Gill 
TSM Administrator 
PeopleSoft Sr. Systems Administrator 
SAIC M/S-G1b 
(858)826-4062 
Email: geoffrey.l.gill AT saic DOT com