Hello, 
Hopefully this is a simple solution. 
I'm trying to do basic engraving across the face of a 1.5" diameter cylinder. I am self taught so my knowledge and terminology may be a little skewed, so forgive (and correct me) where I am in error.
I am currently using V Carve Pro v 9.014's Wrapped Job feature and the using Mach 2/3 Y2A ATC(mm) (.txt) post processor to generate my GCODE file. 
When I import the file into Mach 3 Mill, there is a noticeable alteration to the distance moved by the X and Z axis relative to a standard 3D file. 
Before the file is imported, if I ask the X or Z axis to move 20 mm, it will move the corresponding 20mm. After the file is imported, that number is 100 - 300 mm in the MACH 3 dashboard despite it moving only 20mm phsically.  I then have to shut off the program and reopen it in order for it to return to the correct calibration. 
I currently have my steps per unit set as follows: 
X- 320
Y - 320 
Z - 320 
A - 10
These steps per unit were calibrated and work as usual until the importing of this file type. 
Does anyone know what is going on with my setup? I am at a loss, as I have been using this exact setup with Planet CNC with no issues for months. 
Thank you, 
Jake