diff --git a/src/native/common.rs b/src/native/common.rs
index 2c57f3a..b123b37 100644
--- a/src/native/common.rs
+++ b/src/native/common.rs
@@ -1,5 +1,5 @@
 use chrono::{DateTime, Utc};
-use serde::Deserialize;
+use serde::{Deserialize, Serialize};
 
 #[cfg(feature = "python")]
 use pyo3::{prelude::*, types::PyDateTime};
@@ -13,7 +13,7 @@ use crate::native::deserializers::{
 use crate::native::deserializers::{to_py_datetime, to_py_datetime_option};
 
 #[cfg(not(feature = "python"))]
-#[derive(Debug, Deserialize, PartialEq)]
+#[derive(Clone, Debug, Deserialize, Serialize, PartialEq)]
 #[serde(rename_all = "camelCase")]
 pub struct Value {
     pub by: String,
@@ -31,7 +31,7 @@ pub struct Value {
 }
 
 #[cfg(feature = "python")]
-#[derive(Clone, Debug, Deserialize, PartialEq)]
+#[derive(Clone, Debug, Deserialize, Serialize, PartialEq)]
 #[serde(rename_all = "camelCase")]
 #[pyclass]
 pub struct Value {
@@ -79,7 +79,7 @@ impl Value {
 }
 
 #[cfg(not(feature = "python"))]
-#[derive(Debug, Deserialize, PartialEq)]
+#[derive(Clone, Debug, Deserialize, Serialize, PartialEq)]
 #[serde(rename_all = "camelCase")]
 pub struct Reason {
     pub by: String,
@@ -98,7 +98,7 @@ pub struct Reason {
 }
 
 #[cfg(feature = "python")]
-#[derive(Clone, Debug, Deserialize, PartialEq)]
+#[derive(Clone, Debug, Deserialize, Serialize, PartialEq)]
 #[serde(rename_all = "camelCase")]
 #[pyclass]
 pub struct Reason {
@@ -147,7 +147,7 @@ impl Reason {
 }
 
 #[cfg(not(feature = "python"))]
-#[derive(Debug, Deserialize, PartialEq)]
+#[derive(Clone, Debug, Deserialize, Serialize, PartialEq)]
 #[serde(rename_all = "camelCase")]
 pub struct Entry {
     #[serde(alias = "id")]
@@ -157,7 +157,7 @@ pub struct Entry {
 }
 
 #[cfg(feature = "python")]
-#[derive(Clone, Debug, Deserialize, PartialEq)]
+#[derive(Clone, Debug, Deserialize, Serialize, PartialEq)]
 #[serde(rename_all = "camelCase")]
 #[pyclass(get_all)]
 pub struct Entry {
@@ -168,7 +168,7 @@ pub struct Entry {
 }
 
 #[cfg(not(feature = "python"))]
-#[derive(Debug, Deserialize, PartialEq)]
+#[derive(Clone, Debug, Deserialize, Serialize, PartialEq)]
 #[serde(rename_all = "camelCase")]
 pub struct Field {
     pub name: String,
@@ -190,7 +190,7 @@ pub struct Field {
 }
 
 #[cfg(feature = "python")]
-#[derive(Clone, Debug, Deserialize, PartialEq)]
+#[derive(Clone, Debug, Deserialize, Serialize, PartialEq)]
 #[serde(rename_all = "camelCase")]
 #[pyclass]
 pub struct Field {
@@ -253,7 +253,7 @@ impl Field {
 }
 
 #[cfg(not(feature = "python"))]
-#[derive(Debug, Deserialize, PartialEq)]
+#[derive(Clone, Debug, Deserialize, Serialize, PartialEq)]
 #[serde(rename_all = "camelCase")]
 pub struct Category {
     pub name: String,
@@ -268,7 +268,7 @@ pub struct Category {
 }
 
 #[cfg(feature = "python")]
-#[derive(Clone, Debug, Deserialize, PartialEq)]
+#[derive(Clone, Debug, Deserialize, Serialize, PartialEq)]
 #[serde(rename_all = "camelCase")]
 #[pyclass(get_all)]
 pub struct Category {
@@ -284,7 +284,7 @@ pub struct Category {
 }
 
 #[cfg(not(feature = "python"))]
-#[derive(Debug, Deserialize, PartialEq)]
+#[derive(Clone, Debug, Deserialize, Serialize, PartialEq)]
 #[serde(rename_all = "camelCase")]
 pub struct State {
     pub value: String,
@@ -299,7 +299,7 @@ pub struct State {
 }
 
 #[cfg(feature = "python")]
-#[derive(Clone, Debug, Deserialize, PartialEq)]
+#[derive(Clone, Debug, Deserialize, Serialize, PartialEq)]
 #[serde(rename_all = "camelCase")]
 #[pyclass]
 pub struct State {
@@ -339,7 +339,7 @@ impl State {
 }
 
 #[cfg(not(feature = "python"))]
-#[derive(Debug, Deserialize, PartialEq)]
+#[derive(Clone, Debug, Deserialize, Serialize, PartialEq)]
 #[serde(rename_all = "camelCase")]
 pub struct Form {
     pub name: String,
@@ -398,7 +398,7 @@ pub struct Form {
 }
 
 #[cfg(feature = "python")]
-#[derive(Clone, Debug, Deserialize, PartialEq)]
+#[derive(Clone, Debug, Deserialize, Serialize, PartialEq)]
 #[serde(rename_all = "camelCase")]
 #[pyclass]
 pub struct Form {
diff --git a/src/native/site_native.rs b/src/native/site_native.rs
index a6bd4b7..463548e 100644
--- a/src/native/site_native.rs
+++ b/src/native/site_native.rs
@@ -3,7 +3,7 @@ use chrono::{DateTime, Utc};
 #[cfg(feature = "python")]
 use pyo3::{prelude::*, types::PyDateTime};
 
-use serde::Deserialize;
+use serde::{Deserialize, Serialize};
 
 pub use crate::native::{
     common::{Category, Entry, Field, Form, Reason, State, Value},
@@ -17,7 +17,7 @@ pub use crate::native::{
 use crate::native::deserializers::to_py_datetime;
 
 #[cfg(not(feature = "python"))]
-#[derive(Debug, Deserialize, PartialEq)]
+#[derive(Clone, Debug, Deserialize, Serialize, PartialEq)]
 #[serde(rename_all = "camelCase")]
 pub struct Site {
     pub name: String,
@@ -33,7 +33,7 @@ pub struct Site {
 }
 
 #[cfg(feature = "python")]
-#[derive(Clone, Debug, Deserialize, PartialEq)]
+#[derive(Clone, Debug, Deserialize, Serialize, PartialEq)]
 #[serde(rename_all = "camelCase")]
 #[pyclass]
 pub struct Site {
@@ -95,7 +95,7 @@ impl Site {
 
 #[cfg(not(feature = "python"))]
 /// Contains the information from the Prelude native site XML.
-#[derive(Debug, Deserialize, PartialEq)]
+#[derive(Clone, Debug, Deserialize, Serialize, PartialEq)]
 #[serde(rename_all = "camelCase")]
 pub struct SiteNative {
     #[serde(rename = "site", default)]
@@ -104,7 +104,7 @@ pub struct SiteNative {
 
 #[cfg(feature = "python")]
 /// Contains the information from the Prelude native site XML.
-#[derive(Debug, Deserialize, PartialEq)]
+#[derive(Clone, Debug, Deserialize, Serialize, PartialEq)]
 #[serde(rename_all = "camelCase")]
 #[pyclass(get_all)]
 pub struct SiteNative {
diff --git a/src/native/subject_native.rs b/src/native/subject_native.rs
index ad20799..b82c94a 100644
--- a/src/native/subject_native.rs
+++ b/src/native/subject_native.rs
@@ -6,7 +6,7 @@ use pyo3::{prelude::*, types::PyDateTime};
 #[cfg(feature = "python")]
 use crate::native::deserializers::to_py_datetime;
 
-use serde::Deserialize;
+use serde::{Deserialize, Serialize};
 
 pub use crate::native::{
     common::{Category, Entry, Field, Form, Reason, State, Value},
@@ -17,7 +17,7 @@ pub use crate::native::{
 };
 
 #[cfg(not(feature = "python"))]
-#[derive(Debug, Deserialize, PartialEq)]
+#[derive(Clone, Debug, Deserialize, Serialize, PartialEq)]
 #[serde(rename_all = "camelCase")]
 pub struct Patient {
     pub patient_id: String,
@@ -40,7 +40,7 @@ pub struct Patient {
 }
 
 #[cfg(feature = "python")]
-#[derive(Clone, Debug, Deserialize, PartialEq)]
+#[derive(Clone, Debug, Deserialize, Serialize, PartialEq)]
 #[serde(rename_all = "camelCase")]
 #[pyclass]
 pub struct Patient {
@@ -114,7 +114,7 @@ impl Patient {
 
 #[cfg(not(feature = "python"))]
 /// Contains the information from the Prelude native subject XML.
-#[derive(Debug, Deserialize, PartialEq)]
+#[derive(Clone, Debug, Deserialize, Serialize, PartialEq)]
 #[serde(rename_all = "camelCase")]
 pub struct SubjectNative {
     #[serde(rename = "patient", default)]
@@ -123,7 +123,7 @@ pub struct SubjectNative {
 
 #[cfg(feature = "python")]
 /// Contains the information from the Prelude native subject XML.
-#[derive(Debug, Deserialize, PartialEq)]
+#[derive(Clone, Debug, Deserialize, Serialize, PartialEq)]
 #[serde(rename_all = "camelCase")]
 #[pyclass(get_all)]
 pub struct SubjectNative {
diff --git a/src/native/user_native.rs b/src/native/user_native.rs
index 75835ff..bc8f3e3 100644
--- a/src/native/user_native.rs
+++ b/src/native/user_native.rs
@@ -1,4 +1,4 @@
-use serde::Deserialize;
+use serde::{Deserialize, Serialize};
 
 #[cfg(feature = "python")]
 use pyo3::prelude::*;
@@ -12,7 +12,7 @@ pub use crate::native::{
 };
 
 #[cfg(not(feature = "python"))]
-#[derive(Debug, Deserialize, PartialEq)]
+#[derive(Clone, Debug, Deserialize, Serialize, PartialEq)]
 #[serde(rename_all = "camelCase")]
 pub struct User {
     pub unique_id: String,
@@ -30,7 +30,7 @@ pub struct User {
 }
 
 #[cfg(feature = "python")]
-#[derive(Clone, Debug, Deserialize, PartialEq)]
+#[derive(Clone, Debug, Deserialize, Serialize, PartialEq)]
 #[serde(rename_all = "camelCase")]
 #[pyclass(get_all)]
 pub struct User {
@@ -50,7 +50,7 @@ pub struct User {
 
 #[cfg(not(feature = "python"))]
 /// Contains the information from the Prelude native user XML.
-#[derive(Debug, Deserialize, PartialEq)]
+#[derive(Clone, Debug, Deserialize, Serialize, PartialEq)]
 #[serde(rename_all = "camelCase")]
 pub struct UserNative {
     #[serde(rename = "user", default)]
@@ -59,7 +59,7 @@ pub struct UserNative {
 
 #[cfg(feature = "python")]
 /// Contains the information from the Prelude native user XML.
-#[derive(Debug, Deserialize, PartialEq)]
+#[derive(Clone, Debug, Deserialize, Serialize, PartialEq)]
 #[serde(rename_all = "camelCase")]
 #[pyclass(get_all)]
 pub struct UserNative {