diff --git a/deployment/ccip/changeset/add_chain_test.go b/deployment/ccip/changeset/add_chain_test.go
index 5f8380436bd..d369a481c7d 100644
--- a/deployment/ccip/changeset/add_chain_test.go
+++ b/deployment/ccip/changeset/add_chain_test.go
@@ -59,7 +59,7 @@ func TestAddChainInbound(t *testing.T) {
 	require.NoError(t, e.Env.ExistingAddresses.Merge(out.AddressBook))
 	newAddresses = deployment.NewMemoryAddressBook()
 	tokenConfig := NewTestTokenConfig(state.Chains[e.FeedChainSel].USDFeeds)
-	err = DeployCCIPContracts(e.Env, newAddresses, NewChainsConfig{
+	err = deployCCIPContracts(e.Env, newAddresses, NewChainsConfig{
 		HomeChainSel:   e.HomeChainSel,
 		FeedChainSel:   e.FeedChainSel,
 		ChainsToDeploy: initialDeploy,
diff --git a/deployment/ccip/changeset/deploy.go b/deployment/ccip/changeset/deploy.go
index f3cd5ebf210..8d2b6a63e12 100644
--- a/deployment/ccip/changeset/deploy.go
+++ b/deployment/ccip/changeset/deploy.go
@@ -405,7 +405,7 @@ func configureChain(
 	return nil
 }
 
-// DeployCCIPContracts assumes the following contracts are deployed:
+// deployCCIPContracts assumes the following contracts are deployed:
 // - Capability registry
 // - CCIP home
 // - RMN home
@@ -414,11 +414,11 @@ func configureChain(
 // It then deploys the rest of the CCIP chain contracts to the selected chains
 // registers the nodes with the capability registry and creates a DON for
 // each new chain.
-func DeployCCIPContracts(
+func deployCCIPContracts(
 	e deployment.Environment,
 	ab deployment.AddressBook,
 	c NewChainsConfig) error {
-	err := DeployChainContractsForChains(e, ab, c.HomeChainSel, c.ChainsToDeploy)
+	err := deployChainContractsForChains(e, ab, c.HomeChainSel, c.ChainsToDeploy)
 	if err != nil {
 		e.Logger.Errorw("Failed to deploy chain contracts", "err", err)
 		return err
@@ -437,7 +437,7 @@ func DeployCCIPContracts(
 	return nil
 }
 
-func DeployChainContractsForChains(
+func deployChainContractsForChains(
 	e deployment.Environment,
 	ab deployment.AddressBook,
 	homeChainSel uint64,
diff --git a/deployment/ccip/changeset/deploy_chain.go b/deployment/ccip/changeset/deploy_chain.go
index c1ab11a994e..4c37603c64d 100644
--- a/deployment/ccip/changeset/deploy_chain.go
+++ b/deployment/ccip/changeset/deploy_chain.go
@@ -12,12 +12,12 @@ var _ deployment.ChangeSet[DeployChainContractsConfig] = DeployChainContracts
 
 // DeployChainContracts deploys all new CCIP v1.6 or later contracts for the given chains.
 // It returns the new addresses for the contracts.
-// If there is an error, it will return the successfully deployed addresses and the error so that the caller can call the
+// DeployChainContracts is idempotent. If there is an error, it will return the successfully deployed addresses and the error so that the caller can call the
 // changeset again with the same input to retry the failed deployment.
 // Caller should update the environment's address book with the returned addresses.
 func DeployChainContracts(env deployment.Environment, c DeployChainContractsConfig) (deployment.ChangesetOutput, error) {
 	newAddresses := deployment.NewMemoryAddressBook()
-	err := DeployChainContractsForChains(env, newAddresses, c.HomeChainSelector, c.ChainSelectors)
+	err := deployChainContractsForChains(env, newAddresses, c.HomeChainSelector, c.ChainSelectors)
 	if err != nil {
 		env.Logger.Errorw("Failed to deploy CCIP contracts", "err", err, "newAddresses", newAddresses)
 		return deployment.ChangesetOutput{AddressBook: newAddresses}, deployment.MaybeDataErr(err)
diff --git a/deployment/common/changeset/test_helpers.go b/deployment/common/changeset/test_helpers.go
index cf6dc809d0a..ae20ba61abf 100644
--- a/deployment/common/changeset/test_helpers.go
+++ b/deployment/common/changeset/test_helpers.go
@@ -8,6 +8,7 @@ import (
 	"github.com/smartcontractkit/ccip-owner-contracts/pkg/gethwrappers"
 	jobv1 "github.com/smartcontractkit/chainlink-protos/job-distributor/v1/job"
 	"github.com/smartcontractkit/chainlink-testing-framework/lib/utils/testcontext"
+	"github.com/stretchr/testify/require"
 
 	"github.com/smartcontractkit/chainlink/deployment"
 )
@@ -34,12 +35,18 @@ func WrapChangeSet[C any](fn deployment.ChangeSet[C]) func(e deployment.Environm
 
 // ApplyChangesets applies the changeset applications to the environment and returns the updated environment.
 func ApplyChangesets(t *testing.T, e deployment.Environment, timelocksPerChain map[uint64]*gethwrappers.RBACTimelock, changesetApplications []ChangesetApplication) (deployment.Environment, error) {
-	currentEnv, err := e.Copy()
-	if err != nil {
-		return e, fmt.Errorf("failed to copy environment: %w", err)
-	}
+	addrBook := deployment.NewMemoryAddressBook()
+	require.NoError(t, addrBook.Merge(e.ExistingAddresses))
+	currentEnv := deployment.NewEnvironment(
+		e.Name,
+		e.Logger,
+		addrBook,
+		e.Chains,
+		e.NodeIDs,
+		e.Offchain,
+	)
 	for i, csa := range changesetApplications {
-		out, err := csa.Changeset(currentEnv, csa.Config)
+		out, err := csa.Changeset(*currentEnv, csa.Config)
 		if err != nil {
 			return e, fmt.Errorf("failed to apply changeset at index %d: %w", i, err)
 		}
@@ -83,5 +90,5 @@ func ApplyChangesets(t *testing.T, e deployment.Environment, timelocksPerChain m
 			}
 		}
 	}
-	return currentEnv, nil
+	return *currentEnv, nil
 }
diff --git a/deployment/environment.go b/deployment/environment.go
index 3918d1ba5e1..b9f3700bdc4 100644
--- a/deployment/environment.go
+++ b/deployment/environment.go
@@ -76,17 +76,6 @@ type Environment struct {
 	Offchain          OffchainClient
 }
 
-func (e Environment) Copy() (Environment, error) {
-	newEnv := e
-	addr := NewMemoryAddressBook()
-	err := addr.Merge(e.ExistingAddresses)
-	if err != nil {
-		return Environment{}, err
-	}
-	newEnv.ExistingAddresses = addr
-	return newEnv, nil
-}
-
 func NewEnvironment(
 	name string,
 	logger logger.Logger,