I recognize the importance of reconciling your account statement, Julissa5.
Yes, your client can still reconcile January 2024 in QBDT even though you have an accountant's copy with a dividing date of December 31, 2023. However, it's still recommended to wait until you've imported and reviewed the accountant's copy before reconciling January 2024. This ensures a smoother transition and prevents potential conflicts.
Regarding your second question, reconciliations that include transactions dated on or before the dividing date will be rolled back when you import your accountant's changes. Additionally, if your accountant has reconciled or undone a reconciliation for any period, any reconciliation you did will be undone when you import your accountant's changes.
Check out the guides here if you need help in creating an accountant's copy: Create an Accountant's Copy of your company file in QuickBooks Desktop.
Furthermore, feel free to read this article for more details: Import your accountant's changes into your company file in QuickBooks Desktop.
Let me know if there's anything I can help with reconciling your account statement. I'll be around to assist you anytime.