diff --git a/drafthorse/models/container.py b/drafthorse/models/container.py
index 30cdfe3..56f36dd 100644
--- a/drafthorse/models/container.py
+++ b/drafthorse/models/container.py
@@ -80,10 +80,10 @@ def empty_element(self):
 
     def set_element(self, el, child):
         el._text = child[1]
-        el._scheme_id = child[0]
+        el._scheme_id = child[0] or ""
 
     def add_from_etree(self, root, strict=True):
-        self.add((root.attrib["schemeID"], root.text))
+        self.add((root.attrib.get("schemeID"), root.text))
 
 
 class StringContainer(SimpleContainer):
diff --git a/drafthorse/models/elements.py b/drafthorse/models/elements.py
index 31a0e3d..81efca7 100644
--- a/drafthorse/models/elements.py
+++ b/drafthorse/models/elements.py
@@ -236,7 +236,7 @@ def to_etree(self):
         return node
 
     def from_etree(self, root, strict=True):
-        self._text = Decimal(root.text)
+        self._text = root.text
         self._list_id = root.attrib["listID"]
         self._list_version_id = root.attrib["listVersionID"]
         self._set_on_input = True
@@ -389,9 +389,11 @@ def to_etree(self):
 
     def from_etree(self, root, strict=True):
         try:
-            self._value = datetime.strptime(root.text, "%Y-%m-%dT%H:%M:%S").date()
-        except Exception:
-            self._value = ""
+            self._value = datetime.strptime(root.text, "%Y-%m-%dT%H:%M:%S")
+        except ValueError:
+            if strict:
+                raise
+            self._value = None
         self._set_on_input = True
         return self
 
diff --git a/tests/test_elements.py b/tests/test_elements.py
new file mode 100644
index 0000000..d0e0d8a
--- /dev/null
+++ b/tests/test_elements.py
@@ -0,0 +1,46 @@
+import xml.etree.cElementTree as ET
+from datetime import datetime
+
+import pytest
+
+from drafthorse.models import NS_RAM
+from drafthorse.models.container import IDContainer
+from drafthorse.models.elements import ClassificationElement, DirectDateTimeElement
+
+
+def test_classification_element_roundtrip_non_numeric_text():
+    el = ClassificationElement(NS_RAM, "ClassCode")
+    el._text = "ABC123"
+    el._list_id = "TST"
+    el._list_version_id = "1"
+    node = el.to_etree()
+
+    parsed = ClassificationElement(NS_RAM, "ClassCode").from_etree(node)
+    assert parsed._text == "ABC123"
+    assert parsed._list_id == "TST"
+    assert parsed._list_version_id == "1"
+
+
+def test_direct_datetime_roundtrip_keeps_time():
+    el = DirectDateTimeElement(NS_RAM, "CreationDateTime")
+    el._value = datetime(2024, 5, 3, 14, 30, 45)
+    node = el.to_etree()
+    assert node.text == "2024-05-03T14:30:45"
+
+    parsed = DirectDateTimeElement(NS_RAM, "CreationDateTime").from_etree(node)
+    assert parsed._value == datetime(2024, 5, 3, 14, 30, 45)
+
+
+def test_direct_datetime_invalid_raises_in_strict_mode():
+    node = ET.Element("{%s}CreationDateTime" % NS_RAM)
+    node.text = "not-a-date"
+    with pytest.raises(ValueError):
+        DirectDateTimeElement(NS_RAM, "CreationDateTime").from_etree(node, strict=True)
+
+
+def test_id_container_accepts_missing_scheme_id():
+    node = ET.Element("{%s}GlobalID" % NS_RAM)
+    node.text = "4000001123452"
+    container = IDContainer(child_type=(tuple, list), namespace=NS_RAM, tag="GlobalID")
+    container.add_from_etree(node)
+    assert container.children == [(None, "4000001123452")]