When creating parameters in project_parameters.cfg in asm parameters we have adicional parameter EMX_L_ why?

Parameters on fie project_parameter.cfg:

! NAME BELONGS_TO    PARAM_TYPE   FORMAT DESIGNATE        SHOW_TABLE SHOW_GUI USE_TO_SUM DEFAULT_VALUE

CONTRACAO PART     STRING 8 N Y Y N            %

RECORES PART     STRING 8 N Y Y N            ?

TIPO_DE_ROSCA PART     STRING 8 N Y Y N            Metric

MATERIAL_MOLDAR PART     STRING 15 N Y Y N            ?

See image attached, where are the parameters created on the asm, where you can find duplicated parameter whit prefix "EMX_L_" i think this shouldnt exist?