During character set conversion, any characters in the export file that have no equivalent in the target character set are replaced with a default character. (The default character is defined by the target character set.) To guarantee 100% conversion, the target character set must be a superset (or equivalent) of the source character set.
When the character set width differs between the Export server and the Import server, truncation of data can occur if conversion causes expansion of data. If truncation occurs, then Import displays a warning message.