When running the first sync in the Raiser's Edge - Sphere Connector, the sync date was set incorrectly. As a result, transactions did not come through into Raiser's Edge.
Once your first sync has been initiated, there is no way to back date the next sync to bring in older transactions. Additionally, there is not a way to "change" the gift records so that they would come through into the Connector in any subsequent syncs.
Alternative Solution: Manually export the transactions from Sphere and import into Raiser's Edge (or vice versa).