'Current' History
On the View History window, the History tab of the Giving Unit, and the History Comparison report, CDM+ includes a Current history. The Current history is calculated using any contribution records with a contribution date after the most recent end date of the available contribution histories. For example, if the most recent date range of any contribution history is January 1, 2019 through December 31, 2019, the Current history calculation will include any contributions made since December 31, 2019.
It is possible to have contributions that are not included in any contribution history, so it is a good idea to review the available histories before archiving contribution records.