What does " In Process" status in CAS means?
In process” means that a case processing centre or visa office has received an application but has not finalized it yet. Therefore, for the rest of the application processing time, Client Application Status (CAS) will show the application’s status as “in process.”
As per the glossary in CIC website, "In Process" means When an application that has been sent to CIC has been opened, checked for completeness, and an employee has begun to process it (enter into the computer system, etc.).