Currently, when unmatching bank statement lines you need to select the applicable bank account ledger entry. If there are multiple bank statement lines, they all need to be selected along with the bank account ledger entry. Also, if there is one bank statement line matched to multiple bank account ledger entries, you need to know the exact entries that are matched in order to correctly unmatch. If you don't then more transactions are unmatched than expected.

Suggestion is to be able to select the bank statement line and unmatch and have BC unmatch the applicable bank account ledger entries or vice versa. Currently there is always something selected on the Bank Statement Line and no way to select just a bank account ledger entry. When unmatching we don't always know the details if it is a one-to-many match or a many-to-one match and therefore the unmatching is incorrect.