diff --git a/unittests/scifolder_cfood.yml b/unittests/scifolder_cfood.yml
index 1fd7c98d57b35fa651e36bee2c529a46e3a96cde..5eb33c5a653e5c47a4dba7139256f23df6caae55 100644
--- a/unittests/scifolder_cfood.yml
+++ b/unittests/scifolder_cfood.yml
@@ -16,12 +16,12 @@ Data:  # name of the converter
       subtree: &template
         project_dir:  # name of the first subtree element which is a converter
           type: Directory
-          match: (?P<date>.*?)_(?P<identifier>.*)
+          match: ((?P<year>[0-9]{4,4})_)?(?P<identifier>.*)
           records:
             Project:  # this is an identifiable in this case
               parents:
               - Project  # not needed as the name is equivalent
-              date: $date
+              date: $year
               identifier: $identifier
       
           subtree:
diff --git a/unittests/scifolder_extended.yml b/unittests/scifolder_extended.yml
index 2a1416b778e96ba57fc216d9763572568703ab75..9bab612b9b37e8e295ee8fd02575de506a98d8fc 100644
--- a/unittests/scifolder_extended.yml
+++ b/unittests/scifolder_extended.yml
@@ -16,12 +16,12 @@ Data:  # name of the converter
       subtree: &template
         project_dir:  # name of the first subtree element which is a converter
           type: Directory
-          match: (?P<date>.*?)_(?P<identifier>.*)
+          match: ((?P<year>[0-9]{4,4})_)?(?P<identifier>.*)
           records:
             Project:  # this is an identifiable in this case
               parents:
               - Project  # not needed as the name is equivalent
-              date: $date
+              date: $year
               identifier: $identifier
       
           subtree:
diff --git a/unittests/scifolder_extended2.yml b/unittests/scifolder_extended2.yml
index 2e99896fdc357f3afd2b43a08829eec2e52c39c0..969325e91da488011819c338708a33dcfc32c93e 100644
--- a/unittests/scifolder_extended2.yml
+++ b/unittests/scifolder_extended2.yml
@@ -16,12 +16,12 @@ Data:  # name of the converter
       subtree: &template
         project_dir:  # name of the first subtree element which is a converter
           type: Directory
-          match: (?P<date>.*?)_(?P<identifier>.*)
+          match: ((?P<year>[0-9]{4,4})_)?(?P<identifier>.*)
           records:
             Project:  # this is an identifiable in this case
               parents:
               - Project  # not needed as the name is equivalent
-              date: $date
+              date: $year
               identifier: $identifier
       
           subtree: