Best practice on this is:
– Stop the Task Agent(s) (if a task agent is running it can keep the AppServer alive)
– Stop the AppServer(s)
– Regenerate the DataModel
– Start the AppServer(s)
– Start the Task Agent(s)
The DataModel is stored in the Database and as an AppServer starts it moves the DataModel to the “Assemblies” file system as specified in Web.Config. Having an AppServer running with an out-of-date DataModel can result in data corruption - particularly if a UD Table is new and does not exist at all in the currently active DataModel.