Usamos la misma, funciona bien esta. xD
CALL FUNCTION 'TEXT_CONVERT_XLS_TO_SAP'
EXPORTING
* i_line_header = 'X'
i_tab_raw_data = it_raw " WORK TABLE
i_filename = l_filename
TABLES
i_tab_converted_data = it_excel[] "ACTUAL DATA
EXCEPTIONS
conversion_failed = 1
OTHERS = 2.