In this chapter we successfully added the Feeds Tamper plugins to fields within our importer. We added a Convert case plugin that takes values and adds an initial cap to the value and leaves the remainder of the value in lowercase. This fixes some values in our imported data that are in uppercase and leaves that data in an inconsistent imported format. Using the tamper plugins helps us to import consistent data and keep our content consistent in its presentation in Drupal. This helps us to refactor and clean up our content as we import it.
In the next chapter, we're going to look at how best to maintain our migration path by using the Feeds module's built-in abilities to clone, edit, and update importers.