When a payment is made by a constituent that has a matching gift relationship with an organization, a matching gift claim is also generated. The matching gift claim credits the matching gift organization, and the individual donor. If the original payment is split between multiple applications, then the matching gift claim and associated recognitions will be split as well. However, if a split payment is posted and then adjusted, and users choose the option to reset matching gift claims based on the adjustments (in order to have designation changes carried over onto the claim), then duplicate recognition credits are added on the matching gift claim for the individual constituent.
Download and install the latest patch, which contains all fixes from previous patches. If you are running an older version, download and install the latest version and then the patch.