diff --git a/src/libmw/src/node/CoinsViewCache.cpp b/src/libmw/src/node/CoinsViewCache.cpp
index 9069f8a64d..b0ec06fa5c 100644
--- a/src/libmw/src/node/CoinsViewCache.cpp
+++ b/src/libmw/src/node/CoinsViewCache.cpp
@@ -23,7 +23,7 @@ UTXO::CPtr CoinsViewCache::GetUTXO(const mw::Hash& output_id) const noexcept
     std::vector<CoinAction> actions = m_pUpdates->GetActions(output_id);
     for (const CoinAction& action : actions) {
         if (action.pUTXO != nullptr) {
-            // MW: TODO - Don't allow having more than one UTXO with output_id at a time
+            assert(pUTXO == nullptr);
             pUTXO = action.pUTXO;
         } else {
             assert(pUTXO != nullptr);
@@ -44,15 +44,6 @@ mw::BlockUndo::CPtr CoinsViewCache::ApplyBlock(const mw::Block::CPtr& pBlock)
     BlindingFactor prev_offset = pPreviousHeader != nullptr ? pPreviousHeader->GetKernelOffset() : BlindingFactor();
     KernelSumValidator::ValidateForBlock(pBlock->GetTxBody(), pBlock->GetKernelOffset(), prev_offset);
 
-    std::vector<UTXO> coinsSpent;
-    std::for_each(
-        pBlock->GetInputs().cbegin(), pBlock->GetInputs().cend(),
-        [this, &coinsSpent](const Input& input) {
-            UTXO spentUTXO = SpendUTXO(input.GetOutputID());
-            coinsSpent.push_back(std::move(spentUTXO));
-        }
-    );
-
     std::vector<mw::Hash> coinsAdded;
     std::for_each(
         pBlock->GetOutputs().cbegin(), pBlock->GetOutputs().cend(),
@@ -62,6 +53,15 @@ mw::BlockUndo::CPtr CoinsViewCache::ApplyBlock(const mw::Block::CPtr& pBlock)
         }
     );
 
+    std::vector<UTXO> coinsSpent;
+    std::for_each(
+        pBlock->GetInputs().cbegin(), pBlock->GetInputs().cend(),
+        [this, &coinsSpent](const Input& input) {
+            UTXO spentUTXO = SpendUTXO(input.GetOutputID());
+            coinsSpent.push_back(std::move(spentUTXO));
+        }
+    );
+
     auto pHeader = pBlock->GetHeader();
     if (pHeader->GetOutputRoot() != GetOutputPMMR()->Root()
         || pHeader->GetNumTXOs() != GetOutputPMMR()->GetNumLeaves()
@@ -202,10 +202,15 @@ bool CoinsViewCache::HasSpendInCache(const mw::Hash& output_id) const noexcept
 
 void CoinsViewCache::AddUTXO(const uint64_t header_height, const Output& output)
 {
+    UTXO::CPtr pUTXO = GetUTXO(output.GetOutputID());
+    if (pUTXO != nullptr) {// && m_pLeafSet->Contains(pUTXO->GetLeafIndex())) {
+        ThrowValidation(EConsensusError::DUPLICATES);
+    }
+
     mmr::LeafIndex leafIdx = m_pOutputPMMR->Add(output.GetOutputID());
     m_pLeafSet->Add(leafIdx);
 
-    auto pUTXO = std::make_shared<UTXO>(header_height, std::move(leafIdx), output);
+    pUTXO = std::make_shared<UTXO>(header_height, std::move(leafIdx), output);
 
     m_pUpdates->AddUTXO(pUTXO);
 }
diff --git a/src/wallet/wallet.cpp b/src/wallet/wallet.cpp
index 5c177bca99..e136f76586 100644
--- a/src/wallet/wallet.cpp
+++ b/src/wallet/wallet.cpp
@@ -1975,6 +1975,25 @@ CWallet::ScanResult CWallet::ScanForWalletTransactions(const uint256& start_bloc
             }
 
             if (!block.mweb_block.IsNull()) {
+                // MW: TODO - Pegouts?
+                mw::Coin mweb_coin;
+                for (const mw::Hash& output_id : block.mweb_block.GetOutputIDs()) {
+                    if (mweb_wallet->RewindOutput(block.mweb_block.m_block, output_id, mweb_coin)) {
+                        const CWalletTx* wtx = FindWalletTx(mweb_coin.output_id);
+                        if (wtx) {
+                            // MW: TODO - Update height
+                        } else {
+                            AddToWallet(
+                                MakeTransactionRef(),
+                                boost::make_optional<MWEB::WalletTxInfo>(mweb_coin),
+                                {CWalletTx::Status::CONFIRMED, block_height, block_hash, 0},
+                                nullptr,
+                                false
+                            );
+                        }
+                    }
+                }
+
                 for (const mw::Hash& spent_id : block.mweb_block.GetSpentIDs()) {
                     if (IsMine(CTxInput(spent_id))) {
                         // MW: TODO - Check for zapped transactions with matching spent IDs
@@ -1992,20 +2011,6 @@ CWallet::ScanResult CWallet::ScanForWalletTransactions(const uint256& start_bloc
                         }
                     }
                 }
-
-                mw::Coin mweb_coin;
-                for (const mw::Hash& output_id : block.mweb_block.GetOutputIDs()) {
-                    if (mweb_wallet->RewindOutput(block.mweb_block.m_block, output_id, mweb_coin)) {
-                        // MW: TODO - Check for zapped transactions with matching output IDs
-                        AddToWallet(
-                            MakeTransactionRef(),
-                            boost::make_optional<MWEB::WalletTxInfo>(mweb_coin),
-                            {CWalletTx::Status::CONFIRMED, block_height, block_hash, 0},
-                            nullptr,
-                            false
-                        );
-                    }
-                }
             }
 
             // scan succeeded, record block as most recent successfully scanned