diff --git a/terraform/environments/cdpt-chaps/route53.tf b/terraform/environments/cdpt-chaps/route53.tf
index 4a134201afd..afc5c48d192 100644
--- a/terraform/environments/cdpt-chaps/route53.tf
+++ b/terraform/environments/cdpt-chaps/route53.tf
@@ -1,11 +1,11 @@
-// DEV + PRE-PRODUCTION DNS CONFIGURATION
+// OLD to be deleted
 
 // ACM Public Certificate
 resource "aws_acm_certificate" "external" {
   domain_name       = "modernisation-platform.service.justice.gov.uk"
   validation_method = "DNS"
 
-  subject_alternative_names = ["${var.networking[0].application}.${local.environment}.modernisation-platform.service.justice.gov.uk"]
+  subject_alternative_names = ["${var.networking[0].application}.${var.networking[0].business-unit}-${local.environment}.modernisation-platform.service.justice.gov.uk"]
   tags = {
     Environment = local.environment
   }
@@ -43,26 +43,13 @@ resource "aws_route53_record" "external_validation_subdomain" {
   zone_id         = data.aws_route53_zone.external.zone_id
 }
 
-// Route53 DNS record for directing traffic to the service
-resource "aws_route53_record" "external" {
-  provider = aws.core-vpc
-
-  zone_id = data.aws_route53_zone.external.zone_id
-  name    = "${var.networking[0].application}.${var.networking[0].business-unit}-${local.environment}.modernisation-platform.service.justice.gov.uk"
-  type    = "A"
-
-  alias {
-    name                   = aws_lb.chaps_lb.dns_name
-    zone_id                = aws_lb.chaps_lb.zone_id
-    evaluate_target_health = true
-  }
-}
-
-
 
+// NEW - to be kept
 
 
+// DEV + PRE-PRODUCTION DNS CONFIGURATION
 
+// ACM Public Certificate
 resource "aws_acm_certificate" "external_cert" {
   domain_name       = "modernisation-platform.service.justice.gov.uk"
   validation_method = "DNS"
@@ -102,15 +89,15 @@ resource "aws_route53_record" "external_cert_validation_subdomain" {
   records         = local.domain_record_sub
   ttl             = 60
   type            = local.domain_type_sub[0]
-  zone_id         = data.aws_route53_zone.external.zone_id
+  zone_id         = data.aws_route53_zone.external_cert.zone_id
 }
 
 // Route53 DNS record for directing traffic to the service
 resource "aws_route53_record" "external_cert" {
   provider = aws.core-vpc
 
-  zone_id = data.aws_route53_zone.external.zone_id
-  name    = "${var.networking[0].application}.${var.networking[0].business-unit}-${local.application_data.accounts[local.environment].environment_name}.modernisation-platform.service.justice.gov.uk"
+  zone_id = data.aws_route53_zone.external_cert.zone_id
+  name    = "${var.networking[0].application}.${var.networking[0].business-unit}-${local.environment}.modernisation-platform.service.justice.gov.uk"
   type    = "A"
 
   alias {