One Field on DO won't Write to Live

[thezenmonkey]

I have a DO (SilverStripe Elemental on SS3) where one Field won't write to Live. It also has Fluent Attached so it's a translated field. I tried adding another translated field to the same DO, and it saves correctly.

When I Save & Publish the DO and look at the tables I see

DataObject = Correct
DataObject_versions = Correct
DataObject_live = Incorrect