diff --git a/src/components/donations/DonationDetail.svelte b/src/components/donations/DonationDetail.svelte
index bdd84581..7747f5ec 100644
--- a/src/components/donations/DonationDetail.svelte
+++ b/src/components/donations/DonationDetail.svelte
@@ -40,8 +40,8 @@
     params.donationid
   ).then((data) => {
     data_loaded = true;
-    original_data = Object.assign(original_data, data);
-    editable = Object.assign(editable, original_data);
+    original_data = Object.assign({}, data);
+    editable = Object.assign({}, original_data);
     paid_amount_input = data.paidAmount / 100;
     if (data.responseType == "DISTANCEDONATION") {
       amount_input = data.amountPerDistance / 100;
@@ -254,7 +254,7 @@
         placeholder={$_('search-for-donor-name-or-id')}
         noOptionsMessage={$_('no-donors-found')}
         bind:selectedValue={donor}
-        on:select={(selectedValue) => (editable.donor = selectedValue.detail.value)}
+        on:select={(selectedValue) => {editable.donor = selectedValue.detail.value; editable.donor.donationAmount=original_data.donor.donationAmount; editable.donor.paidDonationAmount =original_data.donor.paidDonationAmount}}
         on:clear={() => (editable.donor = null)} />
     </div>
     {#if original_data.responseType == 'DISTANCEDONATION'}