diff --git a/plugins/3MFReader/ThreeMFReader.py b/plugins/3MFReader/ThreeMFReader.py
index 669bee8f40..37ca1e98aa 100755
--- a/plugins/3MFReader/ThreeMFReader.py
+++ b/plugins/3MFReader/ThreeMFReader.py
@@ -1,4 +1,4 @@
-# Copyright (c) 2019 Ultimaker B.V.
+# Copyright (c) 2021 Ultimaker B.V.
 # Cura is released under the terms of the LGPLv3 or higher.
 
 import os.path
@@ -178,7 +178,7 @@ class ThreeMFReader(MeshReader):
                 if key in known_setting_keys:
                     setting_container.setProperty(key, "value", setting_value)
                 else:
-                    Logger.log("w", "Unable to set setting %s", key)
+                    um_node.metadata[key] = settings[key]
 
         if len(um_node.getChildren()) > 0 and um_node.getMeshData() is None:
             if len(um_node.getAllChildren()) == 1:
diff --git a/plugins/3MFWriter/ThreeMFWriter.py b/plugins/3MFWriter/ThreeMFWriter.py
index 99659817a5..c85eca88bf 100644
--- a/plugins/3MFWriter/ThreeMFWriter.py
+++ b/plugins/3MFWriter/ThreeMFWriter.py
@@ -109,7 +109,11 @@ class ThreeMFWriter(MeshWriter):
 
             # Get values for all changed settings & save them.
             for key in changed_setting_keys:
-                savitar_node.setSetting(key, str(stack.getProperty(key, "value")))
+                savitar_node.setSetting("cura:" + key, str(stack.getProperty(key, "value")))
+
+        # Store the metadata.
+        for key, value in um_node.metadata.items():
+            savitar_node.setSetting(key, value)
 
         for child_node in um_node.getChildren():
             # only save the nodes on the active build plate