I have mine coded as a 16mm Tri-Elmar - this way I know what lens I used when I open the images in Adobe Bridge - you can also search for them by this too.
When I open the images in Adobe Camera Raw, I choose the correct Voigtlander 15mm lens profile - don't choose Leica as a body, choose Voigtlander! Took me a while to figure that one out. Actually, I search for 16mm Tri-Elmar and use a "preset" (that's not the right name) specifically to use the correct lens profile and not much else. The rest is done manually.
Works really well for me