I have a notary signing service with notaries all over the country. Title companies pay me to have my notaries do real estate closings for them. I also, personally do real estate closings for those same title companies. Signing service payments are tied to a specifice invoice. Personal signings are not invoice driven. Usually I receive separate checks for personal signings and signing service signings. Occasionally the payments are combined. How do I record them when the payments are combined?