Database Refresh?

I use the product import function to update routine changes in existing stock, such as inventory levels.  It seems that when I do an import, the change is not immediately reflected in Product Cart.  For instance, I just ran an import to make several products "inactive."  I received verification that the import was successful.  When looking at the product, though, it remained active.

Is there a built-in delay to the changes imported the database?  Is there a function I can trigger that would initiate an update?

Thanks,
Paul