In Realtime 3.5, go to Utilities > Administration > Special Functions.
Scroll down and find "UnMatch Transactions". Click on the gray box to its left to select, and click "Run Command" at the bottom. Wait for the process to finish.
Right under "UnMatch Transactions," click on the gray box to the left of "Delete Clock Dups" and click "Run Command" at the bottom. Wait for the process to finish.
Close the Special Functions/Processes window.
Go to Transactions. Click Match.