workstatus table not updated after changing status to unlocked

Hi Folks ,

I know that when we create a model a workstatus table is created in te backend . I assume that once we lock the data from frontend the status code becomes 2 for for the combination and sits in the table ,and when we unlock that data region the status code should get updated as 0 .But right now the backend table not getting updated after work status unlock . Do you anyone know what should be the reason??

thanks in advance.