In the autopayment posting, name the files by the insurance name, dollar amount of the payment, and the date of the payment. I am not matching it up to the ERA file name in my clearinghouse, I'm matching it up to the payment date and check number from my bank. It also makes it a LOT faster to see which payment I need to post rather than clicking 'Load Autoposting Data' on every single file for that specific payer.