In the Toolpaths Manager, click the “+” beside Properties.
In the Files field, click on the Select machine definition icon
Select the machine definition file even if it is selected already.
Select the Open button.
This will load the new machine definition and control definition settings into your current Mastercam file and overwrite the old settings which the current file is using.
Note: Be sure to replace the machine definitions using the above steps whenever new machine and control definitions are received from your Mastercam reseller. Always keep a back-up copy of your existing machine and control definitions along with the post.