We have a process model in our development environment and pre-production enviro

Hi Eduardo
Hope the following link may help,
forum.appian.com/.../Importing_and_Exporting_Applications

I also found this forum.appian.com/.../Change_and_Configuration_Management very helpful.

We have followed this steps but we dont be able to refresh process models changes from development to pre-production.

Running processes are not updated to the new process model.

If this process is likely to change frequently and required to be active all the time for your process report then you probably need to consider a process design that allows you to call this process again as a sub process and terminate the current version of instance. When the sub process run, it will create a new instance of the same process model but with a new version. You will need to design the process model in a way that it can repopulate the process variables to the state of the previous version of instance. The usage of external storage like database can assist you with this refresh method.