Portion of graphic dropping out of color separations - PostScript 3

In some cases, complex artwork imported from Adobe Illustrator, may cause portions of a color separation to drop out. This is due to the default PostScript setting in the CorelDRAW Postscript driver. 

• Open CorelDRAW and Create a graphic or line of text 
• Click on the Print function - File > Print or CTRL + P on the keyboard 
• Select the Device Independent PostScript File drive from the printer drop down list 
• Selec the PostScript tab and choose PostScript 3 from the Compatibility drop down list
• Click on Apply