Hello,
Since version 1.8.12 for an export, the order defined in the repository is respected. But in evolution is that it would be possible to be able to add a line between two already existing.
Currently the only solution is to modify / delete all the mapping after the field you want to add. For a small repository, this is not a problem, but for a 30-field container that has to evolve, it is really not practical.
P.S .: thank you for the latest developments