bugs in zoho books in matching

bugs in zoho books in matching

I have already matched from a bank statement (inv # 1477, $3781.2) for Sept 27 2012. 

The system shows that this transaction has been matched. But there still an unmatch $3781.2 on Sept 27.

So, I just deleted that transaction, but when I click to see the "deleted transactions" the system shows this

BankAcc_Id should occur at least once.

??