Sort list of fields in S3 when mapping fields

When creating an S3 job, if your file/target table have a large number of fields, it can be painful/time consuming to try and map them all because the list does not appear to be in any order.   

I've created a mapping in a file and have them alphabetized in my file....Would be nice if there was a way to sort the fields in Gainsight so they are easier & faster to update.