Dataset is incremental... how do I force a full load through the API?

I've noticed that when records in my relational DB who's [LastUpdated] date fall outside of the incrmental "look back" period are deleted, this change is not propagated to the report.

Once a month or so, I'd like to be able to force a full historical load through the API, to make sure these records are cleaned up, but I'm not seeing any information on how to do that.  I'd rather not have to push a new dataset to the service, since that will produce a different DatasetID and throw off my calls...

Surely this feature is available.  What am I missing?

THANKS!