Tune for Merges - Field Values Not Copied from Losing to Winning

[jazmindensmore]

I have been using Tune in DemandTools V for single account merges, filtering to specific account IDs and merging one group at a time. I found today that when a field is populated on the losing record and empty on the winning, the value is not moving from the losing record to the winning record. I am losing valuable data when merging using Tune, and Dedupe is not a great module for my use case where I have two account IDs and have already determined they are duplicates. 

Is there a setting that needs to be adjusted to ensure a value is always moved from losing to winning if the winning has an empty value? Or is this a bug? 

[Pugs_Validity]

Hey @jazmindensmore - I was unable to replicate this on my end as it appears to be following the proper "Update If Empty" logic from what I see in my testing. I noticed you are currently engaged on a ticket with my colleague, Amadou, on the support team. I'll ask him to add me on the call you all schedule together to review the use case.