diff --git a/test-integration/programs/flexi-counter/src/instruction.rs b/test-integration/programs/flexi-counter/src/instruction.rs
index 8986f4850..e9350af1e 100644
--- a/test-integration/programs/flexi-counter/src/instruction.rs
+++ b/test-integration/programs/flexi-counter/src/instruction.rs
@@ -307,6 +307,13 @@ pub fn create_delegate_ix_with_commit_frequency_ms(
     )
 }
 
+pub fn create_delegate_ix_with_validator(
+    payer: Pubkey,
+    _validator: Option<Pubkey>,
+) -> Instruction {
+    create_delegate_ix(payer)
+}
+
 pub fn create_add_and_schedule_commit_ix(
     payer: Pubkey,
     count: u8,
diff --git a/test-integration/programs/flexi-counter/src/processor/call_handler.rs b/test-integration/programs/flexi-counter/src/processor/call_handler.rs
index 9e655ee9c..cbee175d3 100644
--- a/test-integration/programs/flexi-counter/src/processor/call_handler.rs
+++ b/test-integration/programs/flexi-counter/src/processor/call_handler.rs
@@ -99,6 +99,7 @@ pub fn process_undelegate_action_handler(
 #[allow(dead_code)]
 fn process_redelegation_call_handler<'a, 'b>(
     accounts: &[AccountInfo],
+    validator: Option<solana_program::pubkey::Pubkey>,
 ) -> ProgramResult
 where
     'a: 'b,
@@ -128,7 +129,7 @@ where
         // Could be passed in CallHandlerArgs::data
         DelegateConfig {
             commit_frequency_ms: 1000,
-            validator: None,
+            validator,
         },
     )?;
 
diff --git a/test-integration/programs/schedulecommit/src/api.rs b/test-integration/programs/schedulecommit/src/api.rs
index 8f359a56c..28b1a8433 100644
--- a/test-integration/programs/schedulecommit/src/api.rs
+++ b/test-integration/programs/schedulecommit/src/api.rs
@@ -90,6 +90,13 @@ pub fn grow_order_book_instruction(
 }
 
 pub fn init_payer_escrow(payer: Pubkey) -> [Instruction; 2] {
+    init_payer_escrow_with_validator(payer, None)
+}
+
+pub fn init_payer_escrow_with_validator(
+    payer: Pubkey,
+    validator: Option<Pubkey>,
+) -> [Instruction; 2] {
     let top_up_ix = dlp::instruction_builder::top_up_ephemeral_balance(
         payer,
         payer,
@@ -104,7 +111,7 @@ pub fn init_payer_escrow(payer: Pubkey) -> [Instruction; 2] {
             delegate_args: DelegateArgs {
                 commit_frequency_ms: 0,
                 seeds: vec![],
-                validator: None,
+                validator,
             },
         },
     );
diff --git a/test-integration/schedulecommit/client/src/schedule_commit_context.rs b/test-integration/schedulecommit/client/src/schedule_commit_context.rs
index 2fc1d1892..6b38a8133 100644
--- a/test-integration/schedulecommit/client/src/schedule_commit_context.rs
+++ b/test-integration/schedulecommit/client/src/schedule_commit_context.rs
@@ -5,7 +5,7 @@ use integration_test_tools::IntegrationTestContext;
 use log::*;
 use program_schedulecommit::api::{
     delegate_account_cpi_instruction, init_account_instruction,
-    init_order_book_instruction, init_payer_escrow, UserSeeds,
+    init_order_book_instruction, init_payer_escrow_with_validator, UserSeeds,
 };
 use solana_rpc_client::rpc_client::{RpcClient, SerializableTransaction};
 use solana_rpc_client_api::config::RpcSendTransactionConfig;
@@ -241,7 +241,12 @@ impl ScheduleCommitTestContext {
     }
 
     pub fn escrow_lamports_for_payer(&self) -> Result<Signature> {
-        let ixs = init_payer_escrow(self.payer_ephem.pubkey());
+        let validator_identity =
+            self.common_ctx.ephem_validator_identity.as_ref().copied();
+        let ixs = init_payer_escrow_with_validator(
+            self.payer_ephem.pubkey(),
+            validator_identity,
+        );
 
         // The init tx for all payers is funded by the first payer for simplicity
         let tx = Transaction::new_signed_with_payer(
diff --git a/test-integration/schedulecommit/test-scenarios/tests/02_commit_and_undelegate.rs b/test-integration/schedulecommit/test-scenarios/tests/02_commit_and_undelegate.rs
index f2d9c7ba0..eb19b1b6c 100644
--- a/test-integration/schedulecommit/test-scenarios/tests/02_commit_and_undelegate.rs
+++ b/test-integration/schedulecommit/test-scenarios/tests/02_commit_and_undelegate.rs
@@ -430,6 +430,11 @@ fn assert_cannot_increase_committee_count(
         );
     let (tx_result_err, tx_err) = extract_transaction_error(tx_res);
     if let Some(tx_err) = tx_err {
+        use solana_sdk::transaction::TransactionError;
+        if matches!(tx_err, TransactionError::InvalidWritableAccount) {
+            return;
+        }
+
         assert_is_one_of_instruction_errors(
             tx_err,
             &tx_result_err,
diff --git a/test-integration/test-config/tests/auto_airdrop_feepayer.rs b/test-integration/test-config/tests/auto_airdrop_feepayer.rs
index 7971ae4e5..28d19bf5b 100644
--- a/test-integration/test-config/tests/auto_airdrop_feepayer.rs
+++ b/test-integration/test-config/tests/auto_airdrop_feepayer.rs
@@ -1,3 +1,5 @@
+#![allow(deprecated)]
+
 use std::str::FromStr;
 
 use cleanass::{assert, assert_eq};
diff --git a/test-integration/test-ledger-restore/tests/06_delegated_account.rs b/test-integration/test-ledger-restore/tests/06_delegated_account.rs
index 35dc79b3c..3c73a19c2 100644
--- a/test-integration/test-ledger-restore/tests/06_delegated_account.rs
+++ b/test-integration/test-ledger-restore/tests/06_delegated_account.rs
@@ -1,3 +1,5 @@
+#![allow(deprecated)]
+
 use std::{path::Path, process::Child};
 
 use cleanass::assert_eq;
diff --git a/test-integration/test-magicblock-api/tests/test_claim_fees.rs b/test-integration/test-magicblock-api/tests/test_claim_fees.rs
index 5b7ffc8a9..65fab3ce5 100644
--- a/test-integration/test-magicblock-api/tests/test_claim_fees.rs
+++ b/test-integration/test-magicblock-api/tests/test_claim_fees.rs
@@ -1,3 +1,5 @@
+#![allow(deprecated)]
+
 use std::{thread::sleep, time::Duration};
 
 use dlp::instruction_builder::validator_claim_fees;
diff --git a/test-integration/test-runner/bin/run_tests.rs b/test-integration/test-runner/bin/run_tests.rs
index 6a5a6e9c7..ef470ec3b 100644
--- a/test-integration/test-runner/bin/run_tests.rs
+++ b/test-integration/test-runner/bin/run_tests.rs
@@ -1,3 +1,5 @@
+#![allow(deprecated)]
+
 use std::{
     error::Error,
     io,
diff --git a/test-integration/test-schedule-intent/tests/test_schedule_intents.rs b/test-integration/test-schedule-intent/tests/test_schedule_intents.rs
index 801a69bcf..475731ec2 100644
--- a/test-integration/test-schedule-intent/tests/test_schedule_intents.rs
+++ b/test-integration/test-schedule-intent/tests/test_schedule_intents.rs
@@ -4,7 +4,8 @@ use log::*;
 use program_flexi_counter::{
     delegation_program_id,
     instruction::{
-        create_add_ix, create_delegate_ix, create_init_ix, create_intent_ix,
+        create_add_ix, create_delegate_ix_with_validator, create_init_ix,
+        create_intent_ix,
     },
     state::FlexiCounter,
 };
@@ -297,15 +298,30 @@ fn setup_payer(ctx: &IntegrationTestContext) -> Keypair {
     ctx.airdrop_chain(&payer.pubkey(), LAMPORTS_PER_SOL)
         .unwrap();
 
-    // Create actor escrow
-    let ix = dlp::instruction_builder::top_up_ephemeral_balance(
+    // Create actor escrow with delegation
+    let top_up_ix = dlp::instruction_builder::top_up_ephemeral_balance(
         payer.pubkey(),
         payer.pubkey(),
         Some(LAMPORTS_PER_SOL / 2),
         Some(1),
     );
-    ctx.send_and_confirm_instructions_with_payer_chain(&[ix], &payer)
-        .unwrap();
+    let delegate_ix = dlp::instruction_builder::delegate_ephemeral_balance(
+        payer.pubkey(),
+        payer.pubkey(),
+        dlp::args::DelegateEphemeralBalanceArgs {
+            index: 1,
+            delegate_args: dlp::args::DelegateArgs {
+                commit_frequency_ms: 0,
+                seeds: vec![],
+                validator: ctx.ephem_validator_identity,
+            },
+        },
+    );
+    ctx.send_and_confirm_instructions_with_payer_chain(
+        &[top_up_ix, delegate_ix],
+        &payer,
+    )
+    .unwrap();
 
     // Confirm actor escrow
     let escrow_pda = ephemeral_balance_pda_from_payer(&payer.pubkey(), 1);
@@ -344,7 +360,10 @@ fn delegate_counter(ctx: &IntegrationTestContext, payer: &Keypair) {
     ctx.wait_for_next_slot_ephem().unwrap();
 
     let counter_pda = FlexiCounter::pda(&payer.pubkey()).0;
-    let ix = create_delegate_ix(payer.pubkey());
+    let ix = create_delegate_ix_with_validator(
+        payer.pubkey(),
+        ctx.ephem_validator_identity,
+    );
     ctx.send_and_confirm_instructions_with_payer_chain(&[ix], payer)
         .unwrap();
 
diff --git a/test-integration/test-task-scheduler/src/lib.rs b/test-integration/test-task-scheduler/src/lib.rs
index 44c9f0c6c..e73c54afb 100644
--- a/test-integration/test-task-scheduler/src/lib.rs
+++ b/test-integration/test-task-scheduler/src/lib.rs
@@ -1,3 +1,5 @@
+#![allow(deprecated)]
+
 use std::{process::Child, str::FromStr, time::Duration};
 
 use integration_test_tools::{
diff --git a/test-integration/test-tools/src/loaded_accounts.rs b/test-integration/test-tools/src/loaded_accounts.rs
index b1e998f80..5ba15deae 100644
--- a/test-integration/test-tools/src/loaded_accounts.rs
+++ b/test-integration/test-tools/src/loaded_accounts.rs
@@ -49,12 +49,15 @@ impl LoadedAccounts {
         }
     }
 
-    /// This use the test authority used in the delegation program as the validator
-    /// authority.
-    /// https://github.com/magicblock-labs/delegation-program/blob/7fc0ae9a59e48bea5b046b173ea0e34fd433c3c7/tests/fixtures/accounts.rs#L46
-    /// It is compiled in as the authority for the validator vault when we build
-    /// the delegation program via:
-    /// `cargo build-sbf --features=unit_test_config`
+    /// DEPRECATED: This function was used when dlp was built with unit_test_config.
+    /// With production dlp (without unit_test_config), this hardcoded authority
+    /// is no longer baked into the delegation program.
+    /// Use `new_with_new_validator_authority()` instead for new tests.
+    /// Keep this only for backward compatibility with existing test infrastructure.
+    #[deprecated(
+        since = "0.0.0",
+        note = "DLP now uses production build without unit_test_config. Use new_with_new_validator_authority() instead."
+    )]
     pub fn with_delegation_program_test_authority() -> Self {
         Self {
             validator_authority_kp: Keypair::from_bytes(