This job doesn’t needs tConvertType. You can easily perform the conversion or casting of data type from within the tMap component's Expression Builder. All you need is the correct expression to give the a correct date format. You can try using the below expression in your tMap:
input_DateColumn!=null && !"".equalsIgnoreCase(input_DateColumn)? TalendDate.parseDateLocale("EEE MMM dd HH:mm:ss zzz yyyy", input_DateColumn, "EN") :null
Hope this was what you were looking for.
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