You can import shift-sensitive flat files in the Flat File Wizard in both fixed-width mode and delimited mode.
A shift-sensitive file may contain both multibyte and single-byte characters. A file may or may not contain shift-in and shift-out keys to separate multibyte characters from single-byte characters.
Shift-in and shift-out keys separate multibyte characters so the Flat File Wizard and the Integration Service can read each character correctly. A shift-out key signals the beginning of a sequence of multibyte characters. A shift-in key signals the end of this sequence. If the file source does not contain shift keys, you need to define shift states for each column in the file so the Integration Service can read each character correctly.
Use single-byte and double-byte shift keys.