To keep a separate property record for each report, you can update the settings for your ACI Research Export. In ACI Report, go to Comps>Export to ACI Research. Click the Settings button in the bottom right for additional options. Under Check for Duplicates, check the box for Report File Name.
If the property is in the system already under that report file name, it will perform the option you choose below: Overwrite, Do not update, or Prompt for user input.
Checking the Report File Name selection for matching tells the database that the property is unique if the report file name is different. Thus, allowing you to have the same property address with a different record in the database.