Hi

I'm not the Documentum expert and someone in a Documentum forum might be able to answer more precisely.

From what I understand the setting of the content attributes are the only way to write meta-data from documentum to Centera.

I think that changing meta information results in a new version of the object in both Documentum and Centera. The old version is not automatically deleted and still referenced in a different table in Documentum.

In a documentum migration I performed we had to use two select statements to get all versions and the additional versions from the original were created after updating attributes like retention.

select distinct rs.i_contents from dm_ca_store cs, dmr_content_s rs where cs.r_object_id = rs.storage_id order by rs.i_contents asc

select distinct i_contents from dmi_subcontent_r

These were the two statements we used. They may help you understand the way Documentum stores content on Centera. A deletion of content would be possible if the retention has expired.

I hope this helps, Holger