Matching Transactions to Bank Statements

Matching Transactions to Bank Statements

Often the Bank Statements I import isn't finding (to Match) the Expenses I've created. When I go to the expense, it is there, but the Matching functionality in Books won't find them either automatically or when I search for them using the matching Search Function. I've tried searching for the expense using every parameter the search function offers. Why won't the statement and expense match up? Why won't the matching search function find the expense.