BigBusiness updates the built-in database it uses for security and fixes when available.
Within a major version like Big Business 14 this might happen a few times in Updates. Usually these do not require changing Clients, just Server, unless the "fix" is in Clients.
On the other hand, a new major version like BigBusiness 15 is a new database entirely. An Upgrade entails replacing all Clients, which may only work with newest Systems.
Locked Alert has been added to Mark, Closed to let you know some orders are locked.
While an Order is open on someone's screen, it is locked from being marked as Closed. To find out whose, double-click to open the order then click on the Locked icon to see.
Inactive has a new system setting so it is enabled automatically. It is on automatically.
Prior to this change, Inactive was a feature set you would enable when you were ready. These setttings still work perfectly; just the System Setting has changed to be enabled.
Inactive shows the Inactive checkbox, lets you Add(+) the Inactive column in Searches, click to toggle, requires Inactive privilege on Employee Access, or can be Disabled, too.