creo4 config.pro option documentation for: MFG_AUTO_REF_MFG_TEMPLATE 
mfg_auto_ref_mfg_template
yes
, no
*
Specifies whether Creo NC
must automatically assign references for steps created from a template. For example, if the template contains a reference coordinate system named MYCSYS
and if the manufacturing model also contains a coordinate system named MYCSYS
, Creo NC
automatically assigns the reference.
yes - Creo NC
automatically assigns one or more of the following references from the template, as applicable:
o
Coordinate system
o
Retract surface
o
Mill window
o
Curve for Trajectory milling (2-axis)
o
Mill surface
o
Mill volume for Profile milling
o
Drill group for Holemaking
Creo NC
assigns the reference based on the name and the type.
no - You must assign the geometric references for all steps created from a template. This is the default.