diff --git a/module/VuFindSearch/src/VuFindSearch/ParamBag.php b/module/VuFindSearch/src/VuFindSearch/ParamBag.php
index 6a414af485a4bb44168a55ac5ec38e42f2b650fc..77aaf3e1d2f2f123eb150da491c7b49c4d9d84f5 100644
--- a/module/VuFindSearch/src/VuFindSearch/ParamBag.php
+++ b/module/VuFindSearch/src/VuFindSearch/ParamBag.php
@@ -192,6 +192,20 @@ class ParamBag
         return $this->params;
     }
 
+    /**
+     * Exchange the parameter array.
+     *
+     * @param array $input New parameters
+     *
+     * @return array Old parameters
+     */
+    public function exchangeArray(array $input)
+    {
+        $current = $this->params;
+        $this->params = $input;
+        return $current;
+    }
+
     /**
      * Return array of params ready to be used in a HTTP request.
      *