Traditional Chinese characters are not preserved under the "Header/Footer/Stamping" properties in GFI FaxMaker Configuration. It appears that these characters are not stored properly in UTF-8 / Unicode. The issue is reproducible on any machine with the support of Traditional Chinese Characters.
There is an available patch that resolves this issue for GFI FaxMaker 2014 only.
Note: Consult the Professional Services team before applying this patch.