I have questions about this field as well. We currently have an integration with SCCM using the SCCM Service Graph, and we're running Discovery. We have a total of ~2.7 million software installation records. 75% of the software installations come from the SCCM Service Graph connector. Of the 2.7m installation records, 233k are listed as active install = false. I cannot find any commonality or explanation for why these records are active false. Looking at one software specifically, there are 27k records and ALL of them are active = false. 

I understand that if there are multiple installations from difference sources, only one will be active = true. But that doesn't explain the data that I'm seeing. 

Is there any other information available regarding this field and how we can ensure that the data is accurate?