diff --git a/src/common/utxobased/engine/UtxoEngine.ts b/src/common/utxobased/engine/UtxoEngine.ts
index 2140382e..b68f8400 100644
--- a/src/common/utxobased/engine/UtxoEngine.ts
+++ b/src/common/utxobased/engine/UtxoEngine.ts
@@ -128,8 +128,15 @@ export async function makeUtxoEngine(
   // private keys.
   let nonceDataLayer: DataLayer | undefined
 
-  // This cached value allows the engine to resync using the same checkpoint as
-  // what the core gave the plugin when the core started plugin.
+  /**
+   * This is a stateful function, which means it is both a setter and a getter.
+   * The state is the cached seenTxCheckpoint for the engine during runtime.
+   * It is initialized with the seenTxCheckpoint state from the core via
+   * `EdgeCurrencyEngineOptions`.
+   * It is updated by the engine's processor as the wallet syncs.
+   * Once the wallet fully syncs, the seenTxCheckpoint value is emitted to the
+   * `onSeenTxCheckpoint` callback so the core can persist this state to disk.
+   */
   const seenTxCheckpoint = ((state?: string) => (
     value?: string
   ): string | undefined => {
@@ -137,6 +144,9 @@ export async function makeUtxoEngine(
     return state
   })()
 
+  // Initialize the seenTxCheckpoint with the value from the core.
+  seenTxCheckpoint(config.engineOptions.seenTxCheckpoint)
+
   emitter.on(EngineEvent.SEEN_TX_CHECKPOINT, checkpoint => {
     seenTxCheckpoint(checkpoint)
   })
@@ -364,9 +374,7 @@ export async function makeUtxoEngine(
       }
     },
 
-    async startEngine(opts): Promise<void> {
-      seenTxCheckpoint(opts?.seenTxCheckpoint)
-
+    async startEngine(): Promise<void> {
       emitter.emit(
         EngineEvent.WALLET_BALANCE_CHANGED,
         currencyInfo.currencyCode,
@@ -739,7 +747,7 @@ export async function makeUtxoEngine(
       await pluginState.refreshServers()
 
       // Restart the engine
-      await engine.startEngine({ seenTxCheckpoint: seenTxCheckpoint() })
+      await engine.startEngine()
     },
 
     async saveTx(edgeTx: EdgeTransaction): Promise<void> {
diff --git a/src/common/utxobased/engine/UtxoEngineProcessor.ts b/src/common/utxobased/engine/UtxoEngineProcessor.ts
index 7b5c1cd6..804d0f03 100644
--- a/src/common/utxobased/engine/UtxoEngineProcessor.ts
+++ b/src/common/utxobased/engine/UtxoEngineProcessor.ts
@@ -646,7 +646,7 @@ interface TaskCache {
   readonly blockbookUtxoCache: BlockbookUtxoCache
   readonly dataLayerUtxoCache: DataLayerUtxoCache
   readonly transactionSpecificUpdateCache: TransactionSpecificUpdateCache
-  readonly transactionUpdateCache: transactionUpdateCache
+  readonly transactionUpdateCache: TransactionUpdateCache
 }
 
 interface AddressForTransactionsCache {
@@ -683,7 +683,7 @@ interface BlockbookUtxoCache {
 interface TransactionSpecificUpdateCache {
   [key: string]: { processing: boolean }
 }
-interface transactionUpdateCache {
+interface TransactionUpdateCache {
   [key: string]: { processing: boolean }
 }
 
diff --git a/test/common/utxobased/engine/engine.spec.ts b/test/common/utxobased/engine/engine.spec.ts
index e8a094c4..f10d0f19 100644
--- a/test/common/utxobased/engine/engine.spec.ts
+++ b/test/common/utxobased/engine/engine.spec.ts
@@ -340,7 +340,7 @@ describe('engine.spec', function () {
               done() // Can be "done" since the promise resolves before the event fires but just be on the safe side
             }
           })
-          engine.startEngine({ seenTxCheckpoint: '' }).catch(e => {
+          engine.startEngine().catch(e => {
             fakeLogger.info('startEngine error', e, e.message)
           })
         }