diff --git a/contracts/v2/PolygonRollupManager.sol b/contracts/v2/PolygonRollupManager.sol
index f02d203fe..eb5e2a15c 100644
--- a/contracts/v2/PolygonRollupManager.sol
+++ b/contracts/v2/PolygonRollupManager.sol
@@ -550,7 +550,6 @@ contract PolygonRollupManager is
                 .accInputHash;
 
             // Do not copy state transitions since it was not used
-
             _zkGasPrice = _legacyBatchFee / 1000;
         }
     }
@@ -881,11 +880,10 @@ contract PolygonRollupManager is
         rollup.rollupTypeID = newRollupTypeID;
 
         // TODO Vulnerability fron running attack TT actually hard to handle
-        if (
-            rollup.lastPendingState != rollup.lastPendingStateConsolidated
-        ) {
-            revert CannotUpdateWithNotConsolidatedPendingState() 
+        if (rollup.lastPendingState != rollup.lastPendingStateConsolidated) {
+            revert CannotUpdateWithUnconsolidatedPendingState();
         }
+
         uint64 lastVerifiedSequence = getLastVerifiedSequence(rollupID);
         rollup.lastVerifiedSequenceBeforeUpgrade = lastVerifiedSequence;
 
@@ -2083,13 +2081,9 @@ contract PolygonRollupManager is
             revert NewStateRootNotInsidePrime();
         }
 
-        uint64 initBlobNum = rollup
-            .sequences[initSequenceNum]
-            .currentBlobNum;
+        uint64 initBlobNum = rollup.sequences[initSequenceNum].currentBlobNum;
 
-        uint64 finalBlobNum = rollup
-            .sequences[finalSequenceNum]
-            .currentBlobNum; 
+        uint64 finalBlobNum = rollup.sequences[finalSequenceNum].currentBlobNum;
 
         uint256 ptr = ptrAccumulateInputSnarkBytes;
 
@@ -2125,7 +2119,7 @@ contract PolygonRollupManager is
             mstore(ptr, newStateRoot)
             ptr := add(ptr, 32)
 
-            // store newBlobStateRoot 
+            // store newBlobStateRoot
             // note this parameters is unused currently
             mstore(ptr, 0)
             ptr := add(ptr, 32)
diff --git a/contracts/v2/PolygonZkEVMGlobalExitRootV2.sol b/contracts/v2/PolygonZkEVMGlobalExitRootV2.sol
index 68d521861..aee80b8b8 100644
--- a/contracts/v2/PolygonZkEVMGlobalExitRootV2.sol
+++ b/contracts/v2/PolygonZkEVMGlobalExitRootV2.sol
@@ -6,13 +6,15 @@ import "./interfaces/IPolygonZkEVMGlobalExitRootV2.sol";
 import "./lib/PolygonZkEVMGlobalExitRootBaseStorage.sol";
 import "../lib/GlobalExitRootLib.sol";
 import "./lib/DepositContractBase.sol";
+import "@openzeppelin/contracts-upgradeable/proxy/utils/Initializable.sol";
 
 /**
  * Contract responsible for managing the exit roots across multiple networks
  */
 contract PolygonZkEVMGlobalExitRootV2 is
     PolygonZkEVMGlobalExitRootBaseStorage,
-    DepositContractBase
+    DepositContractBase,
+    Initializable
 {
     // PolygonZkEVMBridge address
     address public immutable bridgeAddress;
@@ -37,6 +39,14 @@ contract PolygonZkEVMGlobalExitRootV2 is
         bridgeAddress = _bridgeAddress;
     }
 
+    // Reset the previous tree
+    function initialize() external virtual initializer {
+        for (uint256 i = 0; i < _DEPOSIT_CONTRACT_TREE_DEPTH; i++) {
+            delete _branch[i];
+        }
+        depositCount = 0;
+    }
+
     /**
      * @notice Update the exit root of one of the networks and the global exit root
      * @param newRoot new exit tree root
@@ -71,9 +81,12 @@ contract PolygonZkEVMGlobalExitRootV2 is
             // save new leaf in L1InfoTree
             _addLeaf(
                 getLeafValue(
-                    newGlobalExitRoot,
-                    lastBlockHash,
-                    uint64(block.timestamp)
+                    getL1InfoTreeHash(
+                        newGlobalExitRoot,
+                        lastBlockHash,
+                        uint64(block.timestamp)
+                    ),
+                    getRoot()
                 )
             );
 
@@ -113,7 +126,7 @@ contract PolygonZkEVMGlobalExitRootV2 is
      * @param lastBlockHash Last accesible block hash
      * @param timestamp Ethereum timestamp in seconds
      */
-    function getLeafValue(
+    function getL1InfoTreeHash(
         bytes32 newGlobalExitRoot,
         uint256 lastBlockHash,
         uint64 timestamp
@@ -123,4 +136,16 @@ contract PolygonZkEVMGlobalExitRootV2 is
                 abi.encodePacked(newGlobalExitRoot, lastBlockHash, timestamp)
             );
     }
+
+    /**
+     * @notice Given the leaf data returns the leaf hash
+     * @param l1InfoRoot Last global exit root
+     * @param l1InfoTreeHash Last accesible block hash
+     */
+    function getLeafValue(
+        bytes32 l1InfoRoot,
+        bytes32 l1InfoTreeHash
+    ) public pure returns (bytes32) {
+        return keccak256(abi.encodePacked(l1InfoRoot, l1InfoTreeHash));
+    }
 }
diff --git a/contracts/v2/interfaces/IPolygonRollupManager.sol b/contracts/v2/interfaces/IPolygonRollupManager.sol
index da7a5c4cc..7534e9ce7 100644
--- a/contracts/v2/interfaces/IPolygonRollupManager.sol
+++ b/contracts/v2/interfaces/IPolygonRollupManager.sol
@@ -227,4 +227,9 @@ interface IPolygonRollupManager {
      * @dev When a set a zkgasprice out of range
      */
     error zkGasPriceOfRange();
+
+    /**
+     * @dev Cannot update from network admin with unconsolidated pending state
+     */
+    error CannotUpdateWithUnconsolidatedPendingState();
 }