diff --git a/crates/compiler/test_mono/generated/compose_recursive_lambda_set_productive_nullable_wrapped.txt b/crates/compiler/test_mono/generated/compose_recursive_lambda_set_productive_nullable_wrapped.txt
index bcbbc68376..7b25665927 100644
--- a/crates/compiler/test_mono/generated/compose_recursive_lambda_set_productive_nullable_wrapped.txt
+++ b/crates/compiler/test_mono/generated/compose_recursive_lambda_set_productive_nullable_wrapped.txt
@@ -58,7 +58,7 @@ procedure Test.11 (Test.53, Test.54):
     joinpoint Test.27 Test.12 #Attr.12:
         let Test.8 : Int1 = UnionAtIndex (Id 2) (Index 1) #Attr.12;
         let Test.7 : [<rnw><null>, C *self Int1, C *self Int1] = UnionAtIndex (Id 2) (Index 0) #Attr.12;
-        joinpoint #Derived_gen.0:
+        joinpoint #Derived_gen.2:
             joinpoint Test.31 Test.29:
                 let Test.30 : U8 = GetTagId Test.7;
                 switch Test.30:
@@ -85,14 +85,14 @@ procedure Test.11 (Test.53, Test.54):
                     jump Test.31 Test.32;
             
         in
-        let #Derived_gen.1 : Int1 = lowlevel RefCountIsUnique #Attr.12;
-        if #Derived_gen.1 then
+        let #Derived_gen.3 : Int1 = lowlevel RefCountIsUnique #Attr.12;
+        if #Derived_gen.3 then
             decref #Attr.12;
-            jump #Derived_gen.0;
+            jump #Derived_gen.2;
         else
             inc Test.7;
             decref #Attr.12;
-            jump #Derived_gen.0;
+            jump #Derived_gen.2;
     in
     jump Test.27 Test.53 Test.54;
 
@@ -125,7 +125,7 @@ procedure Test.6 (Test.7, Test.8, Test.5):
 procedure Test.9 (Test.10, #Attr.12):
     let Test.8 : Int1 = UnionAtIndex (Id 1) (Index 1) #Attr.12;
     let Test.7 : [<rnw><null>, C *self Int1, C *self Int1] = UnionAtIndex (Id 1) (Index 0) #Attr.12;
-    joinpoint #Derived_gen.2:
+    joinpoint #Derived_gen.0:
         let Test.37 : U8 = GetTagId Test.7;
         joinpoint Test.38 Test.36:
             switch Test.8:
@@ -153,14 +153,14 @@ procedure Test.9 (Test.10, #Attr.12):
                 jump Test.38 Test.39;
         
     in
-    let #Derived_gen.3 : Int1 = lowlevel RefCountIsUnique #Attr.12;
-    if #Derived_gen.3 then
+    let #Derived_gen.1 : Int1 = lowlevel RefCountIsUnique #Attr.12;
+    if #Derived_gen.1 then
         decref #Attr.12;
-        jump #Derived_gen.2;
+        jump #Derived_gen.0;
     else
         inc Test.7;
         decref #Attr.12;
-        jump #Derived_gen.2;
+        jump #Derived_gen.0;
 
 procedure Test.0 ():
     let Test.41 : Int1 = false;
diff --git a/crates/compiler/test_mono/generated/issue_4749.txt b/crates/compiler/test_mono/generated/issue_4749.txt
index 9a5d0685da..3aba16cf00 100644
--- a/crates/compiler/test_mono/generated/issue_4749.txt
+++ b/crates/compiler/test_mono/generated/issue_4749.txt
@@ -161,8 +161,8 @@ procedure Json.533 (Json.534):
 
 procedure Json.535 (Json.1191):
     let Json.1192 : List U8 = StructAtIndex 1 Json.1191;
-    let #Derived_gen.0 : List U8 = StructAtIndex 0 Json.1191;
-    dec #Derived_gen.0;
+    let #Derived_gen.1 : List U8 = StructAtIndex 0 Json.1191;
+    dec #Derived_gen.1;
     ret Json.1192;
 
 procedure Json.59 ():
@@ -815,8 +815,8 @@ procedure Str.9 (Str.79):
     else
         let Str.300 : U8 = StructAtIndex 3 Str.80;
         let Str.301 : U64 = StructAtIndex 0 Str.80;
-        let #Derived_gen.1 : Str = StructAtIndex 1 Str.80;
-        dec #Derived_gen.1;
+        let #Derived_gen.0 : Str = StructAtIndex 1 Str.80;
+        dec #Derived_gen.0;
         let Str.299 : {U64, U8} = Struct {Str.301, Str.300};
         let Str.298 : [C {U64, U8}, C Str] = TagId(0) Str.299;
         ret Str.298;
diff --git a/crates/compiler/test_mono/generated/issue_4772_weakened_monomorphic_destructure.txt b/crates/compiler/test_mono/generated/issue_4772_weakened_monomorphic_destructure.txt
index 95b540c91e..2d7ade37a1 100644
--- a/crates/compiler/test_mono/generated/issue_4772_weakened_monomorphic_destructure.txt
+++ b/crates/compiler/test_mono/generated/issue_4772_weakened_monomorphic_destructure.txt
@@ -135,8 +135,8 @@ procedure Json.533 (Json.534):
 
 procedure Json.535 (Json.1191):
     let Json.1192 : List U8 = StructAtIndex 1 Json.1191;
-    let #Derived_gen.1 : List U8 = StructAtIndex 0 Json.1191;
-    dec #Derived_gen.1;
+    let #Derived_gen.0 : List U8 = StructAtIndex 0 Json.1191;
+    dec #Derived_gen.0;
     ret Json.1192;
 
 procedure Json.59 ():
@@ -816,8 +816,8 @@ procedure Str.9 (Str.79):
     else
         let Str.314 : U8 = StructAtIndex 3 Str.80;
         let Str.315 : U64 = StructAtIndex 0 Str.80;
-        let #Derived_gen.0 : Str = StructAtIndex 1 Str.80;
-        dec #Derived_gen.0;
+        let #Derived_gen.1 : Str = StructAtIndex 1 Str.80;
+        dec #Derived_gen.1;
         let Str.313 : {U64, U8} = Struct {Str.315, Str.314};
         let Str.312 : [C {U64, U8}, C Str] = TagId(0) Str.313;
         ret Str.312;
diff --git a/crates/compiler/test_mono/generated/monomorphized_tag.txt b/crates/compiler/test_mono/generated/monomorphized_tag.txt
index ee240168f8..7aa0cffa6d 100644
--- a/crates/compiler/test_mono/generated/monomorphized_tag.txt
+++ b/crates/compiler/test_mono/generated/monomorphized_tag.txt
@@ -2,10 +2,6 @@ procedure Test.1 (Test.4):
     let Test.12 : Int1 = false;
     ret Test.12;
 
-procedure Test.1 (Test.4):
-    let Test.14 : Int1 = false;
-    ret Test.14;
-
 procedure Test.2 (Test.5, Test.6):
     let Test.10 : U8 = 18i64;
     ret Test.10;