diff --git a/csharp/ql/lib/ext/generated/System.Configuration.model.yml b/csharp/ql/lib/ext/generated/System.Configuration.model.yml
index 0d87d2b9f9eb5..609add7d83be9 100644
--- a/csharp/ql/lib/ext/generated/System.Configuration.model.yml
+++ b/csharp/ql/lib/ext/generated/System.Configuration.model.yml
@@ -194,12 +194,6 @@ extensions:
       - ["System.Configuration", "UriSection", False, "get_Idn", "()", "", "Argument[this]", "ReturnValue", "taint", "df-generated"]
       - ["System.Configuration", "UriSection", False, "get_IriParsing", "()", "", "Argument[this]", "ReturnValue", "taint", "df-generated"]
       - ["System.Configuration", "UriSection", False, "get_SchemeSettings", "()", "", "Argument[this]", "ReturnValue", "taint", "df-generated"]
-  - addsTo:
-      pack: codeql/csharp-all
-      extensible: sourceModel
-    data:
-      - ["System.Configuration", "ApplicationSettingsBase", False, "GetPreviousVersion", "(System.String)", "", "ReturnValue", "file-write", "df-generated"]
-      - ["System.Configuration", "ApplicationSettingsBase", False, "GetPreviousVersion", "(System.String)", "", "ReturnValue", "file", "df-generated"]
   - addsTo:
       pack: codeql/csharp-all
       extensible: neutralModel
diff --git a/csharp/ql/lib/ext/generated/System.Diagnostics.model.yml b/csharp/ql/lib/ext/generated/System.Diagnostics.model.yml
index 6954bec659dec..825ccc11f5ce1 100644
--- a/csharp/ql/lib/ext/generated/System.Diagnostics.model.yml
+++ b/csharp/ql/lib/ext/generated/System.Diagnostics.model.yml
@@ -157,12 +157,6 @@ extensions:
       - ["System.Diagnostics", "TraceSource", False, "TraceSource", "(System.String,System.Diagnostics.SourceLevels)", "", "Argument[0]", "Argument[this]", "taint", "df-generated"]
       - ["System.Diagnostics", "TraceSource", False, "get_Listeners", "()", "", "Argument[this]", "ReturnValue", "taint", "df-generated"]
       - ["System.Diagnostics", "TraceSource", False, "get_Name", "()", "", "Argument[this]", "ReturnValue", "taint", "df-generated"]
-  - addsTo:
-      pack: codeql/csharp-all
-      extensible: sourceModel
-    data:
-      - ["System.Diagnostics", "Process", False, "get_ProcessName", "()", "", "ReturnValue", "file-write", "df-generated"]
-      - ["System.Diagnostics", "Process", False, "get_ProcessName", "()", "", "ReturnValue", "file", "df-generated"]
   - addsTo:
       pack: codeql/csharp-all
       extensible: neutralModel
diff --git a/csharp/ql/lib/ext/generated/System.model.yml b/csharp/ql/lib/ext/generated/System.model.yml
index 0dd7062773c2f..888c1ba3ca0f3 100644
--- a/csharp/ql/lib/ext/generated/System.model.yml
+++ b/csharp/ql/lib/ext/generated/System.model.yml
@@ -603,7 +603,6 @@ extensions:
     data:
       - ["System", "Environment", False, "GetFolderPath", "(System.Environment+SpecialFolder)", "", "ReturnValue", "environment", "df-generated"]
       - ["System", "Environment", False, "GetFolderPath", "(System.Environment+SpecialFolder,System.Environment+SpecialFolderOption)", "", "ReturnValue", "environment", "df-generated"]
-      - ["System", "Environment", False, "get_SystemDirectory", "()", "", "ReturnValue", "environment", "df-generated"]
   - addsTo:
       pack: codeql/csharp-all
       extensible: neutralModel