Summary Attribute Migration
---------------------------

.. index:: voss;voss migrate_summary_attributes

If template updates that modify the summary attributes of
existing models are installed, then the summary
attributes in the data of existing instances of the models
need to be migrated. 

If the summary attributes are not migrated, the list view representation
of these model types will not contain the correct columns or
values for display.

The command to carry out this migration for a specific model
is:

**voss migrate_summary_attributes <model_type>**

For example: ::

    voss migrate_summary_attributes data/InternalNumberInventory