When processed with
pdflatex, my PDF figures work charm. However, when I uploaded the PDF document to some journal submission systems, some texts in the PDF figures disappear in the preview document that is processed by the journal submission system.
I do not understand how exactly the journal submission systems process the PDF manuscript files, but how can I prevent such problems from occuring? Is there any special way to compile the tex file, or any special way of preparing the PDF figures? Some are saved in MATLAB as PDF, and some are saved in Powerpoint as PDF.
The particular journal submission systems are those by Scholar One at http://mc.manuscriptcentral.com/XXXXX.