As a librarian who sets the transformations, I want them to be added to the mapping profile so that they can be used while exporting the inventory records.

Scenario 1:
Given: the transformation field is populated
When: the user clicks Save button
Then: the transformation containing filed name and transformation value is saved and associated with the correct mapping profile.

Scenario 2:
Given: the transformation field is not populated
When: the user clicks Save button
Then: the fields without transformations are ignored

Note: Data entry validation is outside the scope of this user story.