You can limit how far back your NCOA looks for a change of address.
1) Double Click RPCleansing.exe to open CASS Wizard
2) In CASS Wizard window click "Finish"
3) The MOVE Agent Wizard window will pop up (It may take a second to come up)
4) Click on the 'Next' button twice until you see the window below, here you will be able to set NCOA oldest move data between 6 and 48 months
5) After making your changes continue to click the next button until you come across the last setting page and click Finish. *You must click 'Finish' for the changes to take place*