diff --git a/plugins/VersionUpgrade/VersionUpgrade32to33/VersionUpgrade32to33.py b/plugins/VersionUpgrade/VersionUpgrade32to33/VersionUpgrade32to33.py
index 6f7dbeccef..2b8818177f 100644
--- a/plugins/VersionUpgrade/VersionUpgrade32to33/VersionUpgrade32to33.py
+++ b/plugins/VersionUpgrade/VersionUpgrade32to33/VersionUpgrade32to33.py
@@ -6,6 +6,53 @@ import io #To serialise the preference files afterwards.
 
 from UM.VersionUpgrade import VersionUpgrade #We're inheriting from this.
 
+##  Mapping extruder definition IDs to the positions that they are in.
+_EXTRUDER_TO_POSITION = {
+    "builder_premium_large_front": 1,
+    "builder_premium_large_rear": 0,
+    "builder_premium_medium_front": 1,
+    "builder_premium_medium_rear": 0,
+    "builder_premium_small_front": 1,
+    "builder_premium_small_rear": 0,
+    "cartesio_extruder_0": 0,
+    "cartesio_extruder_1": 1,
+    "cartesio_extruder_2": 2,
+    "cartesio_extruder_3": 3,
+    "custom_extruder_1": 0, #Warning, non-programmers are attempting to count here.
+    "custom_extruder_2": 1,
+    "custom_extruder_3": 2,
+    "custom_extruder_4": 3,
+    "custom_extruder_5": 4,
+    "custom_extruder_6": 5,
+    "custom_extruder_7": 6,
+    "custom_extruder_8": 7,
+    "hBp_extruder_left": 0,
+    "hBp_extruder_right": 1,
+    "makeit_dual_1st": 0,
+    "makeit_dual_2nd": 1,
+    "makeit_l_dual_1st": 0,
+    "makeit_l_dual_2nd": 1,
+    "ord_extruder_0": 0,
+    "ord_extruder_1": 1,
+    "ord_extruder_2": 2,
+    "ord_extruder_3": 3,
+    "ord_extruder_4": 4,
+    "punchtec_connect_xl_extruder_left": 0,
+    "punchtec_connect_xl_extruder_right": 1,
+    "raise3D_N2_dual_extruder_0": 0,
+    "raise3D_N2_dual_extruder_1": 1,
+    "raise3D_N2_plus_dual_extruder_0": 0,
+    "raise3D_N2_plus_dual_extruder_1": 1,
+    "ultimaker3_extended_extruder_left": 0,
+    "ultimaker3_extended_extruder_right": 1,
+    "ultimaker3_extruder_left": 0,
+    "ultimaker3_extruder_right": 1,
+    "ultimaker_original_dual_1st": 0,
+    "ultimaker_original_dual_2nd": 1,
+    "vertex_k8400_dual_1st": 0,
+    "vertex_k8400_dual_2nd": 1
+}
+
 ##  Upgrades configurations from the state they were in at version 3.2 to the
 #   state they should be in at version 3.3.
 class VersionUpgrade32to33(VersionUpgrade):
@@ -27,6 +74,24 @@ class VersionUpgrade32to33(VersionUpgrade):
         setting_version = int(parser.get("metadata", "setting_version", fallback = 0))
         return format_version * 1000000 + setting_version
 
-    ##  Upgrades a quality container to the new format.
-    def upgradeQuality(self, serialized, filename):
-        raise NotImplementedError("This has not yet been implemented.")
\ No newline at end of file
+    ##  Upgrades a quality changes container to the new format.
+    def upgradeQualityChanges(self, serialized, filename):
+        parser = configparser.ConfigParser(interpolation = None)
+        parser.read_string(serialized)
+
+        #Extruder quality changes profiles have the extruder position instead of the ID of the extruder definition.
+        if "metadata" in parser and "extruder" in parser["metadata"]: #Only do this for extruder profiles.
+            extruder_id = parser["metadata"]["extruder"]
+            if extruder_id in _EXTRUDER_TO_POSITION:
+                extruder_position = _EXTRUDER_TO_POSITION[extruder_id]
+            else:
+                extruder_position = 0 #The user was using custom extruder definitions. He's on his own then.
+
+            parser["metadata"]["extruder"] = str(extruder_position)
+
+        #Update version number.
+        parser["general"]["version"] = "3"
+
+        result = io.StringIO()
+        parser.write(result)
+        return [filename], [result.getvalue()]
\ No newline at end of file
diff --git a/plugins/VersionUpgrade/VersionUpgrade32to33/__init__.py b/plugins/VersionUpgrade/VersionUpgrade32to33/__init__.py
index dbcad86ac4..7465d79eb0 100644
--- a/plugins/VersionUpgrade/VersionUpgrade32to33/__init__.py
+++ b/plugins/VersionUpgrade/VersionUpgrade32to33/__init__.py
@@ -8,11 +8,11 @@ upgrade = VersionUpgrade32to33.VersionUpgrade32to33()
 def getMetaData():
     return {
         "version_upgrade": {
-            # From                    To                       Upgrade function
-            ("quality", 2000004):     ("quality", 3000004,     upgrade.upgradeQuality),
+            # From                        To                   Upgrade function
+            ("quality_changes", 2000004): ("quality", 3000004, upgrade.upgradeQualityChanges),
         },
         "sources": {
-            "quality": {
+            "quality_changes": {
                 "get_version": upgrade.getCfgVersion,
                 "location": {"./quality"}
             }