Parameters are accessed with C4DAtom::GetParameter()/ C4DAtom::SetParameter(). See Parameter IDs.
Parameter: Transfer to
MDATA_TRANSFER_OBJECT_LINKParameter: Enable Move
MDATA_TRANSFER_USE_MOVEParameter: Enable Move X
MDATA_TRANSFER_USE_MOVE_XParameter: Enable Move Y
MDATA_TRANSFER_USE_MOVE_YParameter: Enable Move Z
MDATA_TRANSFER_USE_MOVE_ZParameter: Enable Scale
MDATA_TRANSFER_USE_SCALEParameter: Enable Rotation
MDATA_TRANSFER_USE_ROTATION