diff --git a/lib/Travelynx.pm b/lib/Travelynx.pm
index 6bf9f02..4d04e9e 100755
--- a/lib/Travelynx.pm
+++ b/lib/Travelynx.pm
@@ -621,52 +621,11 @@ sub startup {
 					}
 
 					if ($polyline) {
-						my $coords   = $polyline->{coords};
-						my $from_eva = $polyline->{from_eva};
-						my $to_eva   = $polyline->{to_eva};
-
-						my $polyline_str = JSON->new->encode($coords);
-
-						my $pl_res = $db->select(
-							'polylines',
-							['id'],
-							{
-								origin_eva      => $from_eva,
-								destination_eva => $to_eva,
-								polyline        => $polyline_str
-							},
-							{ limit => 1 }
+						$self->in_transit->set_polyline(
+							uid      => $uid,
+							db       => $db,
+							polyline => $polyline,
 						);
-
-						my $polyline_id;
-						if ( my $h = $pl_res->hash ) {
-							$polyline_id = $h->{id};
-						}
-						else {
-							eval {
-								$polyline_id = $db->insert(
-									'polylines',
-									{
-										origin_eva      => $from_eva,
-										destination_eva => $to_eva,
-										polyline        => $polyline_str
-									},
-									{ returning => 'id' }
-								)->hash->{id};
-							};
-							if ($@) {
-								$self->log->warn(
-									"add_route_timestamps: insert polyline: $@"
-								);
-							}
-						}
-						if ($polyline_id) {
-							$self->in_transit->set_polyline_id(
-								uid         => $uid,
-								db          => $db,
-								polyline_id => $polyline_id
-							);
-						}
 					}
 
 					# mustn't be called during a transaction
@@ -1372,57 +1331,12 @@ sub startup {
 					);
 
 					if ($polyline) {
-						my $coords   = $polyline->{coords};
-						my $from_eva = $polyline->{from_eva};
-						my $to_eva   = $polyline->{to_eva};
-
-						my $polyline_str = JSON->new->encode($coords);
-
-						my $pl_res = $db->select(
-							'polylines',
-							['id'],
-							{
-								origin_eva      => $from_eva,
-								destination_eva => $to_eva,
-								polyline        => $polyline_str
-							},
-							{ limit => 1 }
+						$self->in_transit->set_polyline(
+							uid      => $uid,
+							db       => $db,
+							polyline => $polyline,
+							old_id   => $in_transit->{polyline_id},
 						);
-
-						my $polyline_id;
-						if ( my $h = $pl_res->hash ) {
-							$polyline_id = $h->{id};
-						}
-						else {
-							eval {
-								$polyline_id = $db->insert(
-									'polylines',
-									{
-										origin_eva      => $from_eva,
-										destination_eva => $to_eva,
-										polyline        => $polyline_str
-									},
-									{ returning => 'id' }
-								)->hash->{id};
-							};
-							if ($@) {
-								$self->app->log->warn(
-									"add_route_timestamps: insert polyline: $@"
-								);
-							}
-						}
-						if (
-							$polyline_id
-							and ( not $in_transit->{polyline_id}
-								or $polyline_id != $in_transit->{polyline_id} )
-						  )
-						{
-							$self->in_transit->set_polyline_id(
-								uid         => $uid,
-								db          => $db,
-								polyline_id => $polyline_id
-							);
-						}
 					}
 
 					return;
diff --git a/lib/Travelynx/Model/InTransit.pm b/lib/Travelynx/Model/InTransit.pm
index 0859aed..69026ac 100644
--- a/lib/Travelynx/Model/InTransit.pm
+++ b/lib/Travelynx/Model/InTransit.pm
@@ -517,6 +517,61 @@ sub set_arrival_times {
 	);
 }
 
+sub set_polyline {
+	my ( $self, %opt ) = @_;
+
+	my $uid      = $opt{uid};
+	my $db       = $opt{db} // $self->{pg}->db;
+	my $polyline = $opt{polyline};
+	my $old_id   = $opt{old_id};
+
+	my $coords   = $polyline->{coords};
+	my $from_eva = $polyline->{from_eva};
+	my $to_eva   = $polyline->{to_eva};
+
+	my $polyline_str = JSON->new->encode($coords);
+
+	my $pl_res = $db->select(
+		'polylines',
+		['id'],
+		{
+			origin_eva      => $from_eva,
+			destination_eva => $to_eva,
+			polyline        => $polyline_str,
+		},
+		{ limit => 1 }
+	);
+
+	my $polyline_id;
+	if ( my $h = $pl_res->hash ) {
+		$polyline_id = $h->{id};
+	}
+	else {
+		eval {
+			$polyline_id = $db->insert(
+				'polylines',
+				{
+					origin_eva      => $from_eva,
+					destination_eva => $to_eva,
+					polyline        => $polyline_str
+				},
+				{ returning => 'id' }
+			)->hash->{id};
+		};
+		if ($@) {
+			$self->{log}->warn("add_route_timestamps: insert polyline: $@");
+		}
+	}
+	if ( $polyline_id and ( not defined $old_id or $polyline_id != $old_id ) ) {
+		$self->set_polyline_id(
+			uid         => $uid,
+			db          => $db,
+			polyline_id => $polyline_id
+		);
+	}
+
+}
+
 sub set_polyline_id {
 	my ( $self, %opt ) = @_;