Data Migration service: why does it exclude the column names for the data that it migrates to a s3 bucket

I am trying to set up a DMS task to migrate the data of a table, it migrates the data but skips the column names and also columns that have no data, how do i migrate the data with the column names included? I tried to included the columns by setting tranformation riles to include the columns but it di not get the column names, migrated just the data, without the column names