Yes — iplicit allows you to open the new financial year while keeping the previous year open. This means you can continue processing transactions in both years simultaneously.
You can also rerun the year‑end rollover at any time if further adjustments are needed before you officially close the prior year. You would simply need to abandon any previous year end rollover journals and rerun the year end rollover process. 
Unpost the journal and then you will have the option to abandon:
If you need further guidance on the year end process, please access our helpful user guide here:  Year end rollover | iplicit