Cam350如何导入带unplated孔的drl文件？

如以下allegro导出的drl

;LEADER: 12
;HEADER:
;CODE  : ASCII
;FILE  : drill-1-2.exc for board aux_flyback_rev1.0.brd ... layers TOP and BOTTOM
;T01 Holesize 1. = 0.500000 Tolerance = +0.000000/-0.000000 PLATED MM
;T02 Holesize 2. = 0.700000 Tolerance = +0.100000/-0.000000 PLATED MM
;T03 Holesize 3. = 0.800000 Tolerance = +0.100000/-0.000000 PLATED MM
;T04 Holesize 4. = 0.900000 Tolerance = +0.100000/-0.000000 PLATED MM
;T05 Holesize 5. = 1.000000 Tolerance = +0.100000/-0.000000 PLATED MM
;T06 Holesize 6. = 1.100000 Tolerance = +0.100000/-0.000000 PLATED MM
;T07 Holesize 7. = 1.200000 Tolerance = +0.100000/-0.000000 PLATED MM
;T08 Holesize 8. = 1.300000 Tolerance = +0.100000/-0.000000 PLATED MM
;T09 Holesize 9. = 1.400000 Tolerance = +0.100000/-0.000000 PLATED MM
;T10 Holesize 10. = 1.500000 Tolerance = +0.100000/-0.000000 PLATED MM
;T11 Holesize 11. = 1.800000 Tolerance = +0.000000/-0.000000 PLATED MM
;T12 Holesize 12. = 1.800000 Tolerance = +0.100000/-0.000000 PLATED MM
;T13 Holesize 13. = 1.000000 Tolerance = +0.100000/-0.000000 NON_PLATED MM
%
G90
T01
X14668Y13176
X15399Y13335
X17812Y13399
X14288Y14668
X13557Y14573
X13684Y14510
X13843Y14414
X13843Y14668
X14097Y14573
X13843Y14668
X14383Y14796
X20638Y15589
X18510Y13716
T02

...
导到CAM350后全部孔都默认为plated了