ok,
no idea how you switched from Mach3Mill to Mach3Plasma Profile.
here a small description "how" i would "Switch".
i do not know your profilename, ok let's say it is "MyMach3Mill".
then there should be in "C:\Mach3" (ok whereever you installed Mach3 basicly),
a file like MyMach3Mill.xml.
now make a copy of this file (in the same Folder), and rename it to:
"MyMach3Plasma".xml
ok now the "Mill" Profile is copied to a "Plasma" Profile.
you have probably a shotcut on your Desktop to run the "MyMach3Mill" "Version" of Mach3 ??!
copy this as well,
open properties
there should be something like this to find:
C:\Mach3\Mach3.exe /p MyMach3Mill
Change this to C:\Mach3\Mach3.exe /p MyMach3Plasma
now start this shortcut, (everything should be exact the same like in Mill Profile),
now you can load the Plasma Screenset (View -> Load Screens -> Plasma.set).
and you should a 1 by 1 copy of your Mill Profile.