It would be interesting to allow 'RecId' fields to be imported through the data management when they are being 'replaced' by their natural key.

Context and concrete example:
Product information management > Bills of materials and formulas > Bills of materials
In the "Bills of materials", the field "Approved by" is a RecId.
If we use the data management to export the records, we retrieve the "Personnel number" of the worker instead of the RecId. It is good and user-friendly.
However, if we try to import the data, an error message appears saying that the field is non-editable.
This verification cannot be by-passed and we are blocked.

For the moment:
- It is possible to directly import RecId field through the data management. However it is not user-friendly to show RecId to users.
- It is NOT possible to import RecId field that have been 'translated' to their unique ID.

We should be allowed to import all types (and RecId especially) through the data management has it is used to migrate data.