Did you know that BCM can parse files and return entries that are then added to the custom inventory module? The “out of the box” operational rule has just this ability. The rule name is “File Analysis via Regular Expression”.  I created a document on BMC Communities that explains in detail how to use this rule to look through the audit logs on the Master Server and capture entries for devices that have been Deprecated or Deleted.
Here is the link to this article: https://communities.bmc.com/docs/DOC-35419
This just further allows the administrators of BCM to be able to better manage devices and shows the ability to create inventory objects for just about anything that may be required.