To change the parameters for an existing Tapered Profile
Select the Entity Data/Apply to All (Edit menu) command or the Entity Data/Individual (Edit menu) command.
Digitise the appropriate wire profile (or part if using the Individual command).
Perform a finish. EdgeCAM displays the parameters for the command used to generate the profile:

Note that the Taper Match parameter is now available. This is only available when you edit a Tapered Profile, and allows you to specify a taper for the selected section of profile. This taper is also applied to adjacent profile sections. Which adjacent sections are affected depends on whether you used the Apply to All or Individual commands, and which ends of the section you digitise.
Change any other parameters as necessary.
Click on the OK button. EdgeCAM now re-creates the Wire Profile using the new parameters.