Definition: Locked transactions are used in Quicken on memorized payees. Locked transactions won't change if you enter another transaction with the same payee while unlocked transactions do.
If you memorize a transaction and lock it, the next time the same payee is entered in your Quicken register the rest of the transaction details will be automatically filled in. If you change the amount and record a new transaction, the locked transaction remains so the the new transaction won't overwrite the old one.
Examples: I memorized and locked a transaction for ABC Quickmart in Quicken 2006 in the amount of $20. The next time I entered 'ABC Quickmart' in my Quicken register, the rest of the transaction details automatically filled in, including the $20 amount. I spend $30 at ABC Quickmart this time so I changed the amount and recorded the transaction. However, since the transaction was locked, each subsequent time I entered 'ABC Quickmart', the amount remained at $20.
