如果现有数据都是ASCII，需要在MySQL中进行转储和转换Latin1和UTF-8吗？

I need to convert my application's so that just the text fields use UTF-8 for an encoding. It's fine if everything else is Latin1, as it is right now. The DB was created a long time ago long before I got here, and long before the group had any ambitions of internationalizing the app...I need to convert my application's so that just