diff --git a/CHANGELOG b/CHANGELOG
index 2f363be7e5..54570f545c 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -4,6 +4,7 @@ Cacti CHANGELOG
 -issue#5622: Errors and deprecation warnings with PHP 8.3.0
 -issue#5629: auth_changepassword.php cannot return to the refer url by just clicking the "Return" button once
 -issue#5638: Add tooltip info about IPv6 address
+-issue#5645: Boost poller fail to update rrd which Data Template and Graph Template items do not match
 -issue#5648: Fractional time offsets can cause huge webserver error-logs
 -issue#5649: Inapprorpiate use of PHP_OS in lib/ping.php on Windows Platform
 -issue#5655: Function get_allowed_devices can returns incorrect device list if session user_id variable is not set
diff --git a/lib/boost.php b/lib/boost.php
index 5f7d92374e..4edc9a20a2 100644
--- a/lib/boost.php
+++ b/lib/boost.php
@@ -844,10 +844,25 @@ function boost_process_poller_output($local_data_id, $rrdtool_pipe = '') {
 		cacti_log('The RRDpath is ' . $rrd_path, false, 'BOOST', POLLER_VERBOSITY_MEDIUM);
 		cacti_log('The RRDpath template is ' . $rrd_tmpl, false, 'BOOST', POLLER_VERBOSITY_MEDIUM);
 
+		$unused_data_source_names = array_rekey(
+			db_fetch_assoc_prepared('SELECT DISTINCT dtr.data_source_name, dtr.data_source_name
+				FROM data_template_rrd AS dtr
+				LEFT JOIN graph_templates_item AS gti
+				ON dtr.id = gti.task_item_id
+				WHERE dtr.local_data_id = ?
+				AND gti.task_item_id IS NULL',
+				array($local_data_id)),
+			'data_source_name', 'data_source_name'
+		);
+
 		boost_timer('results_cycle', BOOST_TIMER_START);
 
 		/* go through each poller_output_boost entries and process */
 		foreach ($results as $item) {
+			if (cacti_sizeof($unused_data_source_names) && isset($unused_data_source_names[$item['rrd_name']])) {
+				continue;
+			}
+
 			/**
 			 * detect duplicate records, this should not happen,
 			 * but adding just in case.
diff --git a/poller_boost.php b/poller_boost.php
index b29e8cd1fc..55c77e436f 100755
--- a/poller_boost.php
+++ b/poller_boost.php
@@ -762,6 +762,8 @@ function boost_process_local_data_ids($last_id, $child, $rrdtool_pipe) {
 		$last_update    = -1;
 		$reset_template = true;
 
+		$unused_data_source_names = array();
+
 		/* we are going to blow away all record if ok */
 		$vals_in_buffer = 0;
 
@@ -769,6 +771,10 @@ function boost_process_local_data_ids($last_id, $child, $rrdtool_pipe) {
 
 		/* go through each poller_output_boost entries and process */
 		foreach ($results as $item) {
+			if ($local_data_id == $item['local_data_id'] && cacti_sizeof($unused_data_source_names) && isset($unused_data_source_names[$item['rrd_name']])) {
+				continue;
+			}
+
 			$item['timestamp'] = trim($item['timestamp']);
 
 			if (!$locked) {
@@ -789,6 +795,20 @@ function boost_process_local_data_ids($last_id, $child, $rrdtool_pipe) {
 			 * and discover the template for the next RRDfile.
 			 */
 			if ($local_data_id != $item['local_data_id']) {
+				$unused_data_source_names = array_rekey(
+					db_fetch_assoc_prepared('SELECT DISTINCT dtr.data_source_name, dtr.data_source_name
+						FROM data_template_rrd AS dtr
+						LEFT JOIN graph_templates_item AS gti
+						ON dtr.id = gti.task_item_id
+						WHERE dtr.local_data_id = ?
+						AND gti.task_item_id IS NULL',
+						array($item['local_data_id'])),
+					'data_source_name', 'data_source_name'
+				);
+				if (cacti_sizeof($unused_data_source_names) && isset($unused_data_source_names[$item['rrd_name']])) {
+					continue;
+				}
+
 				$reset_template = true;
 
 				if (isset($nt_rrd_field_names)) {