fix(export): flattened fields are now correctly exported

[SteveBunlon]

Definition of Done

General

• [x] Write an explicit title for the Pull Request, following Conventional Commits specification
• [x] Test manually the implemented changes
• [x] Validate the code quality (indentation, syntax, style, simplicity, readability)

Security

• [x] Consider the security impact of the changes made

[codeclimate[bot]]

Code Climate has analyzed commit b343d6a4 and detected 0 issues on this pull request.

The test coverage on the diff in this pull request is 100.0% (65% is the threshold).

This pull request will bring the total coverage in the repository to 60.5% (0.8% change).

View more on Code Climate.