Dancing Hoskuld
Deity
I caught my last experienced Gatherer before she suicided, and upgraded her (at prohibitive expense, whinge whinge blah blah etc.) Although she was one turn off finishing the (farm...whatever), the Worker has another 4 turns to go on it.
Saves available on request. V29 vanilla.
That will be because the gatherer "build seed farm" is not the same as the worker "build seed farm". So the worker has to start from scratch. They are not the same because one consumes the unit and the other does not.