The SSIS natively and with the added components undouble and undoubleout does not recognise embedded column delimiters in text. For example, if " (double quote) is the text delimiter and , (comma ) is the column delimiter the following data :
"Hello ""Hello,Hello"" ","Hello ""Hello,Hello"" "
should be read as two fields : Hello "Hello,Hello" and Hello "Hello,Hello"
How ever, SSIS provided undouble does not recognise the comma in the text content and discards the row. Please fix the undouble to handle this.