diff --git a/perllib/FixMyStreet/Cobrand/Bromley.pm b/perllib/FixMyStreet/Cobrand/Bromley.pm
index e885a68742e..d83c58f91fc 100644
--- a/perllib/FixMyStreet/Cobrand/Bromley.pm
+++ b/perllib/FixMyStreet/Cobrand/Bromley.pm
@@ -400,7 +400,7 @@ appropriately.
 =cut
 
 sub open311_get_update_munging {
-    my ($self, $comment, $state) = @_;
+    my ($self, $comment, $state, $request) = @_;
 
     # An update from Bromley with a special referral state
     if ($state eq 'referred to veolia streets') {
@@ -428,7 +428,7 @@ sub open311_get_update_munging {
         # Fetch outgoing notes
         my $echo = $self->feature('echo');
         $echo = Integrations::Echo->new(%$echo);
-        my $event = $echo->GetEvent($problem->external_id);
+        my $event = $echo->GetEvent($request->{service_request_id}); # From the event, not the report
         $echo->log($event->{Data});
         my $data = Integrations::Echo::force_arrayref($event->{Data}, 'ExtensibleDatum');
         my $notes = "";
diff --git a/perllib/Open311/UpdatesBase.pm b/perllib/Open311/UpdatesBase.pm
index 0e622e3ca07..35b80adc8ed 100644
--- a/perllib/Open311/UpdatesBase.pm
+++ b/perllib/Open311/UpdatesBase.pm
@@ -289,7 +289,7 @@ sub _process_update {
         || ($comment->problem_state && $state ne $old_state);
 
     my $cobrand = $body->get_cobrand_handler;
-    $cobrand->call_hook(open311_get_update_munging => $comment, $state)
+    $cobrand->call_hook(open311_get_update_munging => $comment, $state, $request)
         if $cobrand;
 
     # As comment->created has been looked at above, its time zone has been shifted
diff --git a/t/cobrand/bromley.t b/t/cobrand/bromley.t
index 6942597c96b..a86ff4379a5 100644
--- a/t/cobrand/bromley.t
+++ b/t/cobrand/bromley.t
@@ -706,6 +706,9 @@ subtest 'redirecting of reports between backends' => sub {
                 ] } },
             });
         } elsif ($method eq 'GetEvent') {
+            my ($key, $type, $value) = ${$args[3]->value}->value;
+            my $external_id = ${$value->value}->value->value;
+            is $external_id, 'guid';
             return SOAP::Result->new(result => {
                 Guid => 'hmm',
                 Id => 'id',
@@ -768,7 +771,7 @@ subtest 'redirecting of reports between backends' => sub {
             whensent => DateTime->now,
         });
 
-        my $in = $mech->echo_notify_xml('guid', 2104, 15004, 1252);
+        my $in = $mech->echo_notify_xml('guid', 2104, 15004, 1252, 'FMS-' . $report->id);
         my $detail = $report->detail;
 
         subtest 'A report sent to Confirm, then redirected to Echo' => sub {
@@ -810,7 +813,7 @@ subtest 'redirecting of reports between backends' => sub {
             is $c->param('description'), "$detail | Handover notes - This is a handover note";
         };
         subtest '...then redirected back to Confirm' => sub {
-            $report->update({ external_id => 'guid', whensent => DateTime->now, send_method_used => 'Open311' });
+            $report->update({ external_id => 'parent-guid', whensent => DateTime->now, send_method_used => 'Open311' });
             $mech->post('/waste/echo', Content_Type => 'text/xml', Content => $in);
             is $report->comments->count, 2, 'A new update';
             $report->discard_changes;
@@ -833,12 +836,12 @@ subtest 'redirecting of reports between backends' => sub {
         subtest 'A report sent to Echo, redirected to Confirm' => sub {
             $report->comments->delete;
             $report->unset_extra_metadata('original_bromley_external_id');
-            $report->update({ external_id => 'guid' });
+            $report->update({ external_id => 'original-guid' });
             $mech->post('/waste/echo', Content_Type => 'text/xml', Content => $in);
             is $report->comments->count, 1, 'A new update';
             $report->discard_changes;
             is $report->whensent, undef;
-            is $report->external_id, 'guid', 'ID not changed';
+            is $report->external_id, 'original-guid', 'ID not changed';
             is $report->state, 'in progress', 'A state change';
             is $report->category, 'Environmental Services';
             FixMyStreet::Script::Reports::send();