If one wants to edit current configuration of a CVS module from Admin -> CVS Modules -> edit on submit update of log from repository is triggered.

It doesn't make sense as we should only verify if the entered info is correct and save the changes (similarly to the Test option).

Alternatively, we should re-order the process to first save the changes and than try to update as for slow connection or big repository webserver session can timeout before the update operation is completed. That makes impossible to modify / edit the CVS module and force to perform any changes directly on the database level.