diff --git a/src/caoscrawler/crawl.py b/src/caoscrawler/crawl.py
index 4f0a692e4b8b8fa4bc0a90c7eae986466ca125ac..f016df6ab0ad0ab848c6cf9d02f938fd5878a9cf 100644
--- a/src/caoscrawler/crawl.py
+++ b/src/caoscrawler/crawl.py
@@ -51,18 +51,15 @@ from caosadvancedtools.cache import UpdateCache
 from caosadvancedtools.crawler import Crawler as OldCrawler
 from caosadvancedtools.serverside.helper import send_mail
 from caosadvancedtools.utils import create_entity_link
-from linkahead.apiutils import (EntityMergeConflictError, compare_entities,
+from linkahead.apiutils import (compare_entities,
                                 merge_entities)
 from linkahead.cached import cache_clear, cached_get_entity_by
 from linkahead.common.datatype import get_list_datatype, is_reference
-from linkahead.exceptions import EmptyUniqueQueryError
 from linkahead.utils.escape import escape_squoted_text
 
 from .config import get_config_setting
 from .converters import Converter, ConverterValidationError
 from .debug_tree import DebugTree
-from .exceptions import MissingIdentifyingProperty
-from .identifiable import Identifiable
 from .identifiable_adapters import (CaosDBIdentifiableAdapter,
                                     IdentifiableAdapter)
 from .logging import configure_server_side_logging