Replace Column with a calculated Column

Hello Everyone,

I'm a newbie to SSIS. While experimenting with it I've encountered an issue which I'm hoping someone of you could help me out with. I have need to make a specific transformation which as output would have to produce rows with a new calculated column that replaces single column from input. New column has different data type than input column it is replacing. I've used Derived Column Transformation (DER) to do the first part of the work - appending new column and calculating its value (based solely on value from single original column that has to be replaced). Question is how should I do second part, task of removing no longer needed column from the pipeline? I've tried in DER instead of Derived Column being added as new column, selecting Replace 'column' but as it seems it is meant to replace only column data and not column data type (what I've expected). I've also tried using Copy Column Transformation (CPYC) but as it turns out CPYC transformation just (logically) duplicates data in the pipeline with optional different allias.
There's no issue here. Just leave the original column alone in the data flow. It isn't unused, because you used it in the calculation of the new column. That's where you stop using the original column. Just leave it alone after that point.