Edit the Mc6 file in a text editor and save the result as a Pz2 file. Just edit the following:

mc6:
{

version
* {*
* number 7*
* }*
mtlCollection <This line
* {*
* material Body*

Changes to:

Pz2:

{

version
* {*
* number 7*
* }*
figure < This line
* {*
* material Body*

Of course leave off the < This line text. That is there just for illustration purposes.