Thank you for your suggestion Fergus.
The Trial Balance report is a standard report that to prove all the credit values equal to the debit values. The 'Current Year to Date' column displays the balance of the account at the end of the selected period, the same information is also displayed in the YTD Debit/YTD Credit columns in AccountRight Trial Balance reports. I agree the column header isn't very clear, I have passed the feedback to our developers for consideration.
For asset, liabilities and equity accounts, you can use the 'Current Year to Date' figure minus the 'Last Year' figure to get the net activities in current financial year only. Alternatively, you can run the General Ledger detail report for the desired period, and check the total debit and credit.