diff --git a/terraform/platform/iam.tf b/terraform/platform/iam.tf
index d6a6d2d..80f43d0 100644
--- a/terraform/platform/iam.tf
+++ b/terraform/platform/iam.tf
@@ -86,12 +86,6 @@ resource "aws_iam_role" "ecs_task_execution" {
       },
     ]
   })
-
-  tags = {
-    # Terragrunt-era, from a state file that no longer exists. Adopted, not believed.
-    terraform_managed = "true"
-    last_changed      = "Sat 2021-May-08 21:10:10"
-  }
 }
 
 resource "aws_iam_role_policy_attachment" "ecs_task_execution_ecs" {
diff --git a/terraform/platform/ingress.tf b/terraform/platform/ingress.tf
index 1d69b46..e57d0f3 100644
--- a/terraform/platform/ingress.tf
+++ b/terraform/platform/ingress.tf
@@ -26,10 +26,6 @@ resource "aws_lb" "this" {
 
   tags = {
     Name = "incubator" # live value, not the load balancer's own name
-
-    # Terragrunt-era, from a state file that no longer exists. Adopted, not believed.
-    terraform_managed = "true"
-    last_changed      = "Thu 2023-Sep-28 06:13:14"
   }
 
   # Every project's DNS points here; a replacement would mint a new name and break all of it.
diff --git a/terraform/platform/main.tf b/terraform/platform/main.tf
index c986009..ff7ba18 100644
--- a/terraform/platform/main.tf
+++ b/terraform/platform/main.tf
@@ -29,11 +29,6 @@ resource "aws_vpc" "this" {
 
   tags = {
     Name = "incubator-prod-vpc"
-
-    # Terragrunt-era, from a state file that no longer exists. Adopted, not believed.
-    terraform_managed  = "true"
-    terraform_user_arn = "arn:aws:iam::035866691871:user/DarrenP"
-    last_changed       = "Sat 2021-May-08 20:09:31"
   }
 
   # Everything in the account lives in this VPC; a replacement is not recoverable.
diff --git a/terraform/platform/security.tf b/terraform/platform/security.tf
index 0856296..def38ca 100644
--- a/terraform/platform/security.tf
+++ b/terraform/platform/security.tf
@@ -5,10 +5,6 @@ resource "aws_security_group" "alb" {
 
   tags = {
     Name = "incubator-prod-alb"
-
-    # Terragrunt-era, from a state file that no longer exists. Adopted, not believed.
-    terraform_managed = "true"
-    last_changed      = "Thu 2023-Sep-28 06:13:14"
   }
 }
 
@@ -45,10 +41,6 @@ resource "aws_security_group" "database" {
 
   tags = {
     Name = "incubator-prod-database"
-
-    # Terragrunt-era, from a state file that no longer exists. Adopted, not believed.
-    terraform_managed = "true"
-    last_changed      = "Sat 2021-May-08 20:09:49"
   }
 }