I have a 6 page grayscale PDF file that prints to our Xerox 700 as black and white clicks. When I add a colour page to the start of that document and print all 7 pages print as colour clicks. Can anyone give me a clue as to how to aviod this.
At first you submit the 6 pages as black and white or as greyscale if you have that option available to you at the front end it will click as B&W when you add a color page you have to print as color but the original 6 "greyscale" pages may truly not be greyscale. You can check this on the printed piece with a loupe.
Convert the "greyscale" pages to B&W then merge your color page and print I think you will find 1 click for the color 6 for B&W
There were several versions of Adobe Reader that caused this exact problem with incorrect clicks. Just thought I'd mention it.