When importing a node with a field collection field the first import will succeed, but any subsequent imports fail.
It looks like it is related specifically to multi-cardinality field_collection fields.
Somewhere along the line we are grabbing the wrong entity to use as the "host".
The specific problem manifests itself in src/Drupal/Translatable/Content/FieldCollectionTranslatable.php getTargetEntity() around line 68.
When importing a node with a field collection field the first import will succeed, but any subsequent imports fail.
It looks like it is related specifically to multi-cardinality field_collection fields. Somewhere along the line we are grabbing the wrong entity to use as the "host".
The specific problem manifests itself in src/Drupal/Translatable/Content/FieldCollectionTranslatable.php getTargetEntity() around line 68.