If accent marks don't transfer correctly, you can edit them yourself.
On a PC, use these keys
-alt- and 130 for é
-alt- and 160 for á
-alt- and 161 for í
-alt- and 162 for ó
-alt- and 163 for ú
-alt- and 164 for ñ
-alt- and 168 for ¿
-alt- and 173 for ¡
On a Mac, use these keys
-alt- and e, followed by e for é
-alt- and e, followed by a for á
-alt- and e, followed by i for í
-alt- and e, followed by o for ó
-alt- and e, followed by u for ú
-alt- and n, followed by n for ñ
-alt- and -shift- and ?/ for ¿
-alt- and 1 for ¡