diff --git a/.changeset/fix-find-imported-account-scope.md b/.changeset/fix-find-imported-account-scope.md
new file mode 100644
index 0000000..fc9d312
--- /dev/null
+++ b/.changeset/fix-find-imported-account-scope.md
@@ -0,0 +1,5 @@
+---
+"@tim-smart/actualbudget-sync": patch
+---
+
+Fix duplicate and missing transactions when the same account is included in multiple sync runs
diff --git a/src/Actual.ts b/src/Actual.ts
index 994adb7..c0e6e02 100644
--- a/src/Actual.ts
+++ b/src/Actual.ts
@@ -122,7 +122,10 @@ export class Actual extends ServiceMap.Service<Actual>()("Actual", {
         Effect.map((result: any) => result.data as ReadonlyArray<A>),
       )
 
-    const findImported = (importedIds: ReadonlyArray<string>) => {
+    const findImported = (
+      importedIds: ReadonlyArray<string>,
+      accountId: string,
+    ) => {
       if (importedIds.length === 0) {
         return Effect.succeed(new Map<string, TransactionEntity>())
       }
@@ -135,6 +138,7 @@ export class Actual extends ServiceMap.Service<Actual>()("Actual", {
             q("transactions")
               .select(["*"])
               .filter({
+                account: accountId,
                 $or: chunk.map((imported_id) => ({ imported_id })),
               })
               .withDead(),
diff --git a/src/Sync.ts b/src/Sync.ts
index 4b37404..94c5c15 100644
--- a/src/Sync.ts
+++ b/src/Sync.ts
@@ -16,10 +16,6 @@ import {
   Bank,
 } from "./Bank.ts"
 import { Actual, type ActualError } from "./Actual.ts"
-import type {
-  APICategoryEntity,
-  APIPayeeEntity,
-} from "@actual-app/api/@types/loot-core/src/server/api-models.js"
 
 const bigDecimal100 = BigDecimal.fromNumberUnsafe(100)
 const amountToInt = (amount: BigDecimal.BigDecimal) =>
@@ -83,7 +79,7 @@ export const runCollect = Effect.fnUntraced(function* (options: {
         // oxlint-disable-next-line unicorn/no-array-sort
         Array.sort(AccountTransactionOrder),
         Array.map((transaction) => {
-          const imported_id = importId(transaction)
+          const imported_id = importId(bankAccountId, transaction)
           const category = options.categorize && categoryId(transaction)
           const transferPayee =
             transaction.transfer && transferAccountId(transaction)
@@ -127,12 +123,8 @@ export const run = Effect.fnUntraced(function* (options: {
   readonly clearedOnly: boolean
 }) {
   const actual = yield* Actual
-  const categories = yield* actual.use(
-    (_) => _.getCategories() as Promise<Array<APICategoryEntity>>,
-  )
-  const payees = yield* actual.use(
-    (_) => _.getPayees() as Promise<Array<APIPayeeEntity>>,
-  )
+  const categories = yield* actual.use((_) => _.getCategories())
+  const payees = yield* actual.use((_) => _.getPayees())
 
   const results = yield* runCollect({
     ...options,
@@ -141,7 +133,7 @@ export const run = Effect.fnUntraced(function* (options: {
   })
 
   for (const { transactions, ids, actualAccountId } of results) {
-    const alreadyImported = yield* actual.findImported(ids)
+    const alreadyImported = yield* actual.findImported(ids, actualAccountId)
     let toImport: typeof transactions = []
     const updates = Array.empty<Fiber.Fiber<unknown, ActualError>>()
     for (const transaction of transactions) {
@@ -193,13 +185,14 @@ export const run = Effect.fnUntraced(function* (options: {
 
 const makeImportId = () => {
   const counters = new Map<string, number>()
-  return (self: AccountTransaction) => {
+  return (accountId: string, self: AccountTransaction) => {
     const dateParts = DateTime.toParts(self.dateTime)
     const dateString = `${dateParts.year.toString().padStart(4, "0")}${dateParts.month.toString().padStart(2, "0")}${dateParts.day.toString().padStart(2, "0")}`
     const amountInt = amountToInt(self.amount)
     const prefix = `${dateString}${amountInt}`
-    const count = counters.has(prefix) ? counters.get(prefix)! + 1 : 1
-    counters.set(prefix, count)
+    const key = `${accountId}:${prefix}`
+    const count = counters.has(key) ? counters.get(key)! + 1 : 1
+    counters.set(key, count)
     return `${prefix}-${count}`
   }
 }