Is it possible to have "one-sided" matches in Transaction Matching?

Summary:

We have set up Transaction Matching to match transactions between two data sources. However, each month transactions are loaded that need to "match" on just one side of the data source. For example, ten transactions that load from one data source that net to zero. These transactions will not have a match to the other data source, but matching within one side. We are looking into the possibility of aggregating these transactions so that the balance is zero, but using that approach will mean losing some required detail on the transactions. Is it possible to do a one-sided match? Is