Mathtype fonts
I wrote a textbook where I placed hundreds of equations in Mathtype. To Mathtype I changed the fonts by default and used Cambria and Cambria math. I printed in PDF many times withou problems. Then I had to format the computer and the character equations now appear with a question mark. I know that changing each equation for Time New Roman, the problem is solved, but I am looking for a better method because there are hundreds of equations that I have to modify.
