diff --git a/vm/rust/src/jsonrpc.rs b/vm/rust/src/jsonrpc.rs
index 3e5778a0f6..746cd45ab8 100644
--- a/vm/rust/src/jsonrpc.rs
+++ b/vm/rust/src/jsonrpc.rs
@@ -49,6 +49,29 @@ pub struct TransactionTrace {
     state_diff: Option<StateDiff>,
 }
 
+
+impl TransactionTrace {
+    pub fn make_legacy(&mut self) {
+        self.state_diff = None;
+        self.r#type = None;
+        if let Some(invocation) = &mut self.validate_invocation {
+            invocation.make_legacy()
+        }
+        if let Some(ExecuteInvocation::Ok(fn_invocation)) = &mut self.execute_invocation {
+            fn_invocation.make_legacy()
+        }
+        if let Some(invocation) = &mut self.fee_transfer_invocation {
+            invocation.make_legacy()
+        }
+        if let Some(invocation) = &mut self.constructor_invocation {
+            invocation.make_legacy()
+        }
+        if let Some(invocation) = &mut self.function_invocation {
+            invocation.make_legacy()
+        }
+    }
+}
+
 #[derive(Serialize)]
 struct StateDiff {
     storage_diffs: Vec<StorageDiff>,
@@ -227,7 +250,14 @@ pub struct FunctionInvocation {
     pub calls: Vec<FunctionInvocation>,
     pub events: Vec<OrderedEvent>,
     pub messages: Vec<OrderedMessage>,
-    pub execution_resources: ExecutionResources,
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub execution_resources: Option<ExecutionResources>,
+}
+
+impl FunctionInvocation {
+    fn make_legacy(&mut self) {
+        self.execution_resources = None
+    }
 }
 
 use blockifier::execution::call_info::CallInfo as BlockifierCallInfo;
@@ -260,7 +290,7 @@ impl From<BlockifierCallInfo> for FunctionInvocation {
                     ordered_message
                 })
                 .collect(),
-            execution_resources: val.vm_resources.into(),
+            execution_resources: Some(val.vm_resources.into()),
         }
     }
 }