Hi Wayne,
If the figures in the 'Item Status' window are not correct, you can have them recalculated. To do this, go to the Technics module and run the 'Recalculate Item Status' Maintenance function.
If a figure is still incorrect after running this function, change to the Database Maintenance module and enter the Item Number in the Log Item Status Updates setting. Then run the 'Recalculate Item Status' Maintenance function again and open the "hansa.log" file (the server's "hansa.log" file in a multi-user system). Each transaction that affects the Item Status will be listed, which may help you find the cause of the error.
I suggest you to first test on "Test system" and not Live!
Regards
Dejan