The condition relation is lost during mapping import

[nriss]

Description

When we import a mapping on pyrog with condition, the relation is not taken into account.

Reproduction

1. Export a mapping containing the condition which have a relation other than "=="
2. Import the source

Expectation

Keep the relation

Screenshots

Before:

After:

Environment

Importing from staging to dev or from staging to staging

Additional context

The relation is correctly stored in the mapping