diff --git a/test/spec/crud/unified/aggregate-write-readPreference.json b/test/spec/crud/unified/aggregate-write-readPreference.json
index bc887e83cbc..c1fa3b4574a 100644
--- a/test/spec/crud/unified/aggregate-write-readPreference.json
+++ b/test/spec/crud/unified/aggregate-write-readPreference.json
@@ -78,11 +78,6 @@
           "x": 33
         }
       ]
-    },
-    {
-      "collectionName": "coll1",
-      "databaseName": "db0",
-      "documents": []
     }
   ],
   "tests": [
@@ -159,22 +154,6 @@
             }
           ]
         }
-      ],
-      "outcome": [
-        {
-          "collectionName": "coll1",
-          "databaseName": "db0",
-          "documents": [
-            {
-              "_id": 2,
-              "x": 22
-            },
-            {
-              "_id": 3,
-              "x": 33
-            }
-          ]
-        }
       ]
     },
     {
@@ -250,22 +229,6 @@
             }
           ]
         }
-      ],
-      "outcome": [
-        {
-          "collectionName": "coll1",
-          "databaseName": "db0",
-          "documents": [
-            {
-              "_id": 2,
-              "x": 22
-            },
-            {
-              "_id": 3,
-              "x": 33
-            }
-          ]
-        }
       ]
     },
     {
@@ -344,22 +307,6 @@
             }
           ]
         }
-      ],
-      "outcome": [
-        {
-          "collectionName": "coll1",
-          "databaseName": "db0",
-          "documents": [
-            {
-              "_id": 2,
-              "x": 22
-            },
-            {
-              "_id": 3,
-              "x": 33
-            }
-          ]
-        }
       ]
     },
     {
@@ -438,22 +385,6 @@
             }
           ]
         }
-      ],
-      "outcome": [
-        {
-          "collectionName": "coll1",
-          "databaseName": "db0",
-          "documents": [
-            {
-              "_id": 2,
-              "x": 22
-            },
-            {
-              "_id": 3,
-              "x": 33
-            }
-          ]
-        }
       ]
     }
   ]
diff --git a/test/spec/crud/unified/aggregate-write-readPreference.yml b/test/spec/crud/unified/aggregate-write-readPreference.yml
index 86f5a4399c7..16f1035752d 100644
--- a/test/spec/crud/unified/aggregate-write-readPreference.yml
+++ b/test/spec/crud/unified/aggregate-write-readPreference.yml
@@ -51,9 +51,6 @@ initialData:
       - { _id: 1, x: 11 }
       - { _id: 2, x: 22 }
       - { _id: 3, x: 33 }
-  - collectionName: *collection1Name
-    databaseName: *database0Name
-    documents: []
 
 tests:
   - description: "Aggregate with $out includes read preference for 5.0+ server"
@@ -78,12 +75,6 @@ tests:
                 $readPreference: *readPreference
                 readConcern: *readConcern
                 writeConcern: *writeConcern
-    outcome: &outcome
-      - collectionName: *collection1Name
-        databaseName: *database0Name
-        documents:
-          - { _id: 2, x: 22 }
-          - { _id: 3, x: 33 }
 
   - description: "Aggregate with $out omits read preference for pre-5.0 server"
     runOnRequirements:
@@ -108,7 +99,6 @@ tests:
                 $readPreference: { $$exists: false }
                 readConcern: *readConcern
                 writeConcern: *writeConcern
-    outcome: *outcome
 
   - description: "Aggregate with $merge includes read preference for 5.0+ server"
     runOnRequirements:
@@ -131,7 +121,6 @@ tests:
                 $readPreference: *readPreference
                 readConcern: *readConcern
                 writeConcern: *writeConcern
-    outcome: *outcome
 
   - description: "Aggregate with $merge omits read preference for pre-5.0 server"
     runOnRequirements:
@@ -152,4 +141,3 @@ tests:
                 $readPreference: { $$exists: false }
                 readConcern: *readConcern
                 writeConcern: *writeConcern
-    outcome: *outcome
diff --git a/test/spec/crud/unified/db-aggregate-write-readPreference.json b/test/spec/crud/unified/db-aggregate-write-readPreference.json
index 2a81282de81..b6460f001f2 100644
--- a/test/spec/crud/unified/db-aggregate-write-readPreference.json
+++ b/test/spec/crud/unified/db-aggregate-write-readPreference.json
@@ -52,13 +52,6 @@
       }
     }
   ],
-  "initialData": [
-    {
-      "collectionName": "coll0",
-      "databaseName": "db0",
-      "documents": []
-    }
-  ],
   "tests": [
     {
       "description": "Database-level aggregate with $out includes read preference for 5.0+ server",
@@ -141,17 +134,6 @@
             }
           ]
         }
-      ],
-      "outcome": [
-        {
-          "collectionName": "coll0",
-          "databaseName": "db0",
-          "documents": [
-            {
-              "_id": 1
-            }
-          ]
-        }
       ]
     },
     {
@@ -235,17 +217,6 @@
             }
           ]
         }
-      ],
-      "outcome": [
-        {
-          "collectionName": "coll0",
-          "databaseName": "db0",
-          "documents": [
-            {
-              "_id": 1
-            }
-          ]
-        }
       ]
     },
     {
@@ -332,17 +303,6 @@
             }
           ]
         }
-      ],
-      "outcome": [
-        {
-          "collectionName": "coll0",
-          "databaseName": "db0",
-          "documents": [
-            {
-              "_id": 1
-            }
-          ]
-        }
       ]
     },
     {
@@ -429,17 +389,6 @@
             }
           ]
         }
-      ],
-      "outcome": [
-        {
-          "collectionName": "coll0",
-          "databaseName": "db0",
-          "documents": [
-            {
-              "_id": 1
-            }
-          ]
-        }
       ]
     }
   ]
diff --git a/test/spec/crud/unified/db-aggregate-write-readPreference.yml b/test/spec/crud/unified/db-aggregate-write-readPreference.yml
index 04a3b2169f5..03fcd35aa35 100644
--- a/test/spec/crud/unified/db-aggregate-write-readPreference.yml
+++ b/test/spec/crud/unified/db-aggregate-write-readPreference.yml
@@ -43,11 +43,6 @@ createEntities:
       database: *database0
       collectionName: &collection0Name coll0
 
-initialData:
-  - collectionName: *collection0Name
-    databaseName: *database0Name
-    documents: []
-
 tests:
   - description: "Database-level aggregate with $out includes read preference for 5.0+ server"
     runOnRequirements:
@@ -73,11 +68,6 @@ tests:
                 $readPreference: *readPreference
                 readConcern: *readConcern
                 writeConcern: *writeConcern
-    outcome: &outcome
-      - collectionName: *collection0Name
-        databaseName: *database0Name
-        documents:
-          - { _id: 1 }
 
   - description: "Database-level aggregate with $out omits read preference for pre-5.0 server"
     runOnRequirements:
@@ -102,7 +92,6 @@ tests:
                 $readPreference: { $$exists: false }
                 readConcern: *readConcern
                 writeConcern: *writeConcern
-    outcome: *outcome
 
   - description: "Database-level aggregate with $merge includes read preference for 5.0+ server"
     runOnRequirements:
@@ -127,7 +116,6 @@ tests:
                 $readPreference: *readPreference
                 readConcern: *readConcern
                 writeConcern: *writeConcern
-    outcome: *outcome
 
   - description: "Database-level aggregate with $merge omits read preference for pre-5.0 server"
     runOnRequirements:
@@ -148,4 +136,3 @@ tests:
                 $readPreference: { $$exists: false }
                 readConcern: *readConcern
                 writeConcern: *writeConcern
-    outcome: *outcome