Fast Parse is a much more elegant solution
- Add a Data Conversion Data Flow Component.
- Right click, Show Advanced Editor…
- Goto Input and Output Properties
- Expand Data Conversion Output and click on the date column
- Set FastParse to True in the Custom Properties
- Make sure the data type is set to database date [DT_DBDATE]
- Run the ssis package again the yyyymmdd dates should flow smoothly from nvarchar to date