I just tested this.  And it is true.  The data set is not recalled and the 
mgmtclas is changed.

I did the alter against a migrated dataset and changed the mgmtclas. I then did 
s LISTC ALL and the MGMTCLAS was changed correctly.


Lizette



>
>>The ALTER command will not attempt to recall the data set.  It does change 
>>the management class in place. 
>
>How?
>Please explain.
>The management class is stored in the VVDS, or in some HSM control block.
>Laspt I checked, ALTER didn't talk directly to HSM.
>

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