Sum values from all Versions

Hi, 

I am trying to sum the total value from one line item for all versions.  The source module contains versions and the module containing the calculation does not have versions.  The formula I used references the source module and line item and returns the value from the current version only.  Is there a formula that can be used to sum all versions.  

Note: The purpose of this formula is to identify list items with no value across all versions so that these list items can be deleted from the model.