diff --git a/tests/baselines/reference/50527.symbols b/tests/baselines/reference/50527.symbols
deleted file mode 100644
index 82e4f791e50aa..0000000000000
--- a/tests/baselines/reference/50527.symbols
+++ /dev/null
@@ -1,33 +0,0 @@
-=== tests/cases/compiler/50527.ts ===
-type S = 
->S : Symbol(S, Decl(50527.ts, 0, 0))
-
-| { type: 'string', value: string } 
->type : Symbol(type, Decl(50527.ts, 1, 3))
->value : Symbol(value, Decl(50527.ts, 1, 19))
-
-| { type: 'number', value: number } 
->type : Symbol(type, Decl(50527.ts, 2, 3))
->value : Symbol(value, Decl(50527.ts, 2, 19))
-
-| { type: 'unknown', value: unknown }
->type : Symbol(type, Decl(50527.ts, 3, 3))
->value : Symbol(value, Decl(50527.ts, 3, 20))
-
-| { value: undefined };
->value : Symbol(value, Decl(50527.ts, 4, 3))
-
-declare var s: S
->s : Symbol(s, Decl(50527.ts, 6, 11))
->S : Symbol(S, Decl(50527.ts, 0, 0))
-
-if (s.value !== undefined) {
->s.value : Symbol(value, Decl(50527.ts, 1, 19), Decl(50527.ts, 2, 19), Decl(50527.ts, 3, 20), Decl(50527.ts, 4, 3))
->s : Symbol(s, Decl(50527.ts, 6, 11))
->value : Symbol(value, Decl(50527.ts, 1, 19), Decl(50527.ts, 2, 19), Decl(50527.ts, 3, 20), Decl(50527.ts, 4, 3))
->undefined : Symbol(undefined)
-
-  s;
->s : Symbol(s, Decl(50527.ts, 6, 11))
-}
-
diff --git a/tests/baselines/reference/50527.js b/tests/baselines/reference/undefinedAsDiscriminantWithUnknown(strictnullchecks=false).js
similarity index 64%
rename from tests/baselines/reference/50527.js
rename to tests/baselines/reference/undefinedAsDiscriminantWithUnknown(strictnullchecks=false).js
index 464861a224d1e..c30c4d6723deb 100644
--- a/tests/baselines/reference/50527.js
+++ b/tests/baselines/reference/undefinedAsDiscriminantWithUnknown(strictnullchecks=false).js
@@ -1,4 +1,4 @@
-//// [50527.ts]
+//// [undefinedAsDiscriminantWithUnknown.ts]
 type S = 
 | { type: 'string', value: string } 
 | { type: 'number', value: number } 
@@ -10,10 +10,14 @@ declare var s: S
 if (s.value !== undefined) {
   s;
 }
+else {
+  s;
+}
 
-
-//// [50527.js]
-"use strict";
+//// [undefinedAsDiscriminantWithUnknown.js]
 if (s.value !== undefined) {
     s;
 }
+else {
+    s;
+}
diff --git a/tests/baselines/reference/undefinedAsDiscriminantWithUnknown(strictnullchecks=false).symbols b/tests/baselines/reference/undefinedAsDiscriminantWithUnknown(strictnullchecks=false).symbols
new file mode 100644
index 0000000000000..13da7db0555c1
--- /dev/null
+++ b/tests/baselines/reference/undefinedAsDiscriminantWithUnknown(strictnullchecks=false).symbols
@@ -0,0 +1,36 @@
+=== tests/cases/compiler/undefinedAsDiscriminantWithUnknown.ts ===
+type S = 
+>S : Symbol(S, Decl(undefinedAsDiscriminantWithUnknown.ts, 0, 0))
+
+| { type: 'string', value: string } 
+>type : Symbol(type, Decl(undefinedAsDiscriminantWithUnknown.ts, 1, 3))
+>value : Symbol(value, Decl(undefinedAsDiscriminantWithUnknown.ts, 1, 19))
+
+| { type: 'number', value: number } 
+>type : Symbol(type, Decl(undefinedAsDiscriminantWithUnknown.ts, 2, 3))
+>value : Symbol(value, Decl(undefinedAsDiscriminantWithUnknown.ts, 2, 19))
+
+| { type: 'unknown', value: unknown }
+>type : Symbol(type, Decl(undefinedAsDiscriminantWithUnknown.ts, 3, 3))
+>value : Symbol(value, Decl(undefinedAsDiscriminantWithUnknown.ts, 3, 20))
+
+| { value: undefined };
+>value : Symbol(value, Decl(undefinedAsDiscriminantWithUnknown.ts, 4, 3))
+
+declare var s: S
+>s : Symbol(s, Decl(undefinedAsDiscriminantWithUnknown.ts, 6, 11))
+>S : Symbol(S, Decl(undefinedAsDiscriminantWithUnknown.ts, 0, 0))
+
+if (s.value !== undefined) {
+>s.value : Symbol(value, Decl(undefinedAsDiscriminantWithUnknown.ts, 1, 19), Decl(undefinedAsDiscriminantWithUnknown.ts, 2, 19), Decl(undefinedAsDiscriminantWithUnknown.ts, 3, 20), Decl(undefinedAsDiscriminantWithUnknown.ts, 4, 3))
+>s : Symbol(s, Decl(undefinedAsDiscriminantWithUnknown.ts, 6, 11))
+>value : Symbol(value, Decl(undefinedAsDiscriminantWithUnknown.ts, 1, 19), Decl(undefinedAsDiscriminantWithUnknown.ts, 2, 19), Decl(undefinedAsDiscriminantWithUnknown.ts, 3, 20), Decl(undefinedAsDiscriminantWithUnknown.ts, 4, 3))
+>undefined : Symbol(undefined)
+
+  s;
+>s : Symbol(s, Decl(undefinedAsDiscriminantWithUnknown.ts, 6, 11))
+}
+else {
+  s;
+>s : Symbol(s, Decl(undefinedAsDiscriminantWithUnknown.ts, 6, 11))
+}
diff --git a/tests/baselines/reference/undefinedAsDiscriminantWithUnknown(strictnullchecks=false).types b/tests/baselines/reference/undefinedAsDiscriminantWithUnknown(strictnullchecks=false).types
new file mode 100644
index 0000000000000..af09de9d3d839
--- /dev/null
+++ b/tests/baselines/reference/undefinedAsDiscriminantWithUnknown(strictnullchecks=false).types
@@ -0,0 +1,36 @@
+=== tests/cases/compiler/undefinedAsDiscriminantWithUnknown.ts ===
+type S = 
+>S : { type: 'string'; value: string; } | { type: 'number'; value: number; } | { type: 'unknown'; value: unknown; } | { value: undefined; }
+
+| { type: 'string', value: string } 
+>type : "string"
+>value : string
+
+| { type: 'number', value: number } 
+>type : "number"
+>value : number
+
+| { type: 'unknown', value: unknown }
+>type : "unknown"
+>value : unknown
+
+| { value: undefined };
+>value : undefined
+
+declare var s: S
+>s : S
+
+if (s.value !== undefined) {
+>s.value !== undefined : boolean
+>s.value : unknown
+>s : S
+>value : unknown
+>undefined : undefined
+
+  s;
+>s : S
+}
+else {
+  s;
+>s : S
+}
diff --git a/tests/baselines/reference/undefinedAsDiscriminantWithUnknown(strictnullchecks=true).js b/tests/baselines/reference/undefinedAsDiscriminantWithUnknown(strictnullchecks=true).js
new file mode 100644
index 0000000000000..c30c4d6723deb
--- /dev/null
+++ b/tests/baselines/reference/undefinedAsDiscriminantWithUnknown(strictnullchecks=true).js
@@ -0,0 +1,23 @@
+//// [undefinedAsDiscriminantWithUnknown.ts]
+type S = 
+| { type: 'string', value: string } 
+| { type: 'number', value: number } 
+| { type: 'unknown', value: unknown }
+| { value: undefined };
+
+declare var s: S
+
+if (s.value !== undefined) {
+  s;
+}
+else {
+  s;
+}
+
+//// [undefinedAsDiscriminantWithUnknown.js]
+if (s.value !== undefined) {
+    s;
+}
+else {
+    s;
+}
diff --git a/tests/baselines/reference/undefinedAsDiscriminantWithUnknown(strictnullchecks=true).symbols b/tests/baselines/reference/undefinedAsDiscriminantWithUnknown(strictnullchecks=true).symbols
new file mode 100644
index 0000000000000..13da7db0555c1
--- /dev/null
+++ b/tests/baselines/reference/undefinedAsDiscriminantWithUnknown(strictnullchecks=true).symbols
@@ -0,0 +1,36 @@
+=== tests/cases/compiler/undefinedAsDiscriminantWithUnknown.ts ===
+type S = 
+>S : Symbol(S, Decl(undefinedAsDiscriminantWithUnknown.ts, 0, 0))
+
+| { type: 'string', value: string } 
+>type : Symbol(type, Decl(undefinedAsDiscriminantWithUnknown.ts, 1, 3))
+>value : Symbol(value, Decl(undefinedAsDiscriminantWithUnknown.ts, 1, 19))
+
+| { type: 'number', value: number } 
+>type : Symbol(type, Decl(undefinedAsDiscriminantWithUnknown.ts, 2, 3))
+>value : Symbol(value, Decl(undefinedAsDiscriminantWithUnknown.ts, 2, 19))
+
+| { type: 'unknown', value: unknown }
+>type : Symbol(type, Decl(undefinedAsDiscriminantWithUnknown.ts, 3, 3))
+>value : Symbol(value, Decl(undefinedAsDiscriminantWithUnknown.ts, 3, 20))
+
+| { value: undefined };
+>value : Symbol(value, Decl(undefinedAsDiscriminantWithUnknown.ts, 4, 3))
+
+declare var s: S
+>s : Symbol(s, Decl(undefinedAsDiscriminantWithUnknown.ts, 6, 11))
+>S : Symbol(S, Decl(undefinedAsDiscriminantWithUnknown.ts, 0, 0))
+
+if (s.value !== undefined) {
+>s.value : Symbol(value, Decl(undefinedAsDiscriminantWithUnknown.ts, 1, 19), Decl(undefinedAsDiscriminantWithUnknown.ts, 2, 19), Decl(undefinedAsDiscriminantWithUnknown.ts, 3, 20), Decl(undefinedAsDiscriminantWithUnknown.ts, 4, 3))
+>s : Symbol(s, Decl(undefinedAsDiscriminantWithUnknown.ts, 6, 11))
+>value : Symbol(value, Decl(undefinedAsDiscriminantWithUnknown.ts, 1, 19), Decl(undefinedAsDiscriminantWithUnknown.ts, 2, 19), Decl(undefinedAsDiscriminantWithUnknown.ts, 3, 20), Decl(undefinedAsDiscriminantWithUnknown.ts, 4, 3))
+>undefined : Symbol(undefined)
+
+  s;
+>s : Symbol(s, Decl(undefinedAsDiscriminantWithUnknown.ts, 6, 11))
+}
+else {
+  s;
+>s : Symbol(s, Decl(undefinedAsDiscriminantWithUnknown.ts, 6, 11))
+}
diff --git a/tests/baselines/reference/50527.types b/tests/baselines/reference/undefinedAsDiscriminantWithUnknown(strictnullchecks=true).types
similarity index 78%
rename from tests/baselines/reference/50527.types
rename to tests/baselines/reference/undefinedAsDiscriminantWithUnknown(strictnullchecks=true).types
index aef6d2fea0f85..69d640efe7337 100644
--- a/tests/baselines/reference/50527.types
+++ b/tests/baselines/reference/undefinedAsDiscriminantWithUnknown(strictnullchecks=true).types
@@ -1,4 +1,4 @@
-=== tests/cases/compiler/50527.ts ===
+=== tests/cases/compiler/undefinedAsDiscriminantWithUnknown.ts ===
 type S = 
 >S : { type: 'string'; value: string; } | { type: 'number'; value: number; } | { type: 'unknown'; value: unknown; } | { value: undefined; }
 
@@ -30,4 +30,7 @@ if (s.value !== undefined) {
   s;
 >s : { type: "string"; value: string; } | { type: "number"; value: number; } | { type: "unknown"; value: unknown; }
 }
-
+else {
+  s;
+>s : { type: "unknown"; value: unknown; } | { value: undefined; }
+}
diff --git a/tests/cases/compiler/50527.ts b/tests/cases/compiler/undefinedAsDiscriminantWithUnknown.ts
similarity index 81%
rename from tests/cases/compiler/50527.ts
rename to tests/cases/compiler/undefinedAsDiscriminantWithUnknown.ts
index 19f1753b421c2..6a6cf1007b0bb 100644
--- a/tests/cases/compiler/50527.ts
+++ b/tests/cases/compiler/undefinedAsDiscriminantWithUnknown.ts
@@ -1,4 +1,4 @@
-// @strict: true
+// @strictNullChecks: true,false
 
 type S = 
 | { type: 'string', value: string } 
@@ -11,3 +11,6 @@ declare var s: S
 if (s.value !== undefined) {
   s;
 }
+else {
+  s;
+}
\ No newline at end of file