Explode Tamper Plugin deletes data if CSV value is left empty.

My client is using Feeds on a regular basis to create and update content with a CSV file. The "Explode" tamper is being used and we are finding that when a field is left blank in the CSV during an "update" event, the importer is deleting the values. Core Feed plugins check for empty values and skip them during an Update event. We need the Explode tamper plugin to skip past empty fields.