pltfrm holes are not showing in draft

i had done neagative extrusion to pltfrm, the opening is showing in design,  but now i took extraction in draft openings are not showing.
the att for opening are as follows





thank you,

this can be happened due to currept dwg. sheet  also so check it again in new sheet..

can u post a screen shot... u also need to check the representation rule..