Setting Units

I am using the Mach3 post processor and am having issues with units. The positions are posted as metric but the feeds are imperial.

There is a warning in the ICAM comments that "It is a common mistake for nc programmers to set their length units to inch or millimeter, and then forget to set their feedrate designation(s) accordingly." It also states that the selection of metric or imperial is based on 3DEXPERIENCE setting.

The only place I can see to change settings is preferences/common preferences/units. All of the units there are correct (feed is mm_mn). Any help with this issue would be appreciated.