Inventory reporting incorrect last scan date

Hi,
we have written a system to extract the ZENworks inventory data via
SQL
and import it into our main inventory system.
We are having a problem where the last scan date is incorrect (it can
be
12 hours or more in the future).

I know ZEN 3.2 is fairly clever, but didn't know it could tell the
future!!!

Any help would be appreciated.

Thanks

Kevin