diff --git a/lib/utils/sync-helpers.ts b/lib/utils/sync-helpers.ts
index fc80001..b5729ea 100644
--- a/lib/utils/sync-helpers.ts
+++ b/lib/utils/sync-helpers.ts
@@ -123,7 +123,7 @@ export function isPicklistEntity(entity: EntityType): boolean {
  */
 export function getLastModifiedField(entity: EntityType): string {
   const mapping: Record<EntityType, string> = {
-    [EntityType.COMPANIES]: 'lastTrackedModificationDateTime',
+    [EntityType.COMPANIES]: 'lastActivityDate',
     [EntityType.TICKETS]: 'lastActivityDate',
     [EntityType.TASKS]: 'lastActivityDateTime',
     [EntityType.PROJECTS]: 'lastActivityDateTime',
@@ -131,8 +131,8 @@ export function getLastModifiedField(entity: EntityType): string {
     [EntityType.CONFIGURATION_ITEMS]: 'lastModifiedTime',
     [EntityType.CONTACTS]: 'lastModifiedDate',
     [EntityType.CONTRACTS]: 'lastModifiedDateTime',
-    [EntityType.BILLING_ITEMS]: 'createDate',
-    [EntityType.TIME_ENTRIES]: 'lastModifiedDate',
+    [EntityType.BILLING_ITEMS]: 'itemDate',
+    [EntityType.TIME_ENTRIES]: 'dateWorked',
     [EntityType.STATUSES]: 'lastModifiedDate',
     [EntityType.ISSUE_TYPES]: 'lastModifiedDate',
     [EntityType.SUB_ISSUE_TYPES]: 'lastModifiedDate',