Audit of attribute value change: is the old value available?

When changing the value of an user attribute in the FIM Portal, the new attribute value is properly logged. This can be read in the request and in the standard report FIMUserHistory.

The question is, what about the old value that was replaced? Is the old value available in the Data Warehouse somewhere, so one can make a report or is it gone forever (of course one can find the old value by looking at the previous attribute change or creation event, but this could be too long time ago)?

Thanks for helping,

Didier.