Save the data stream settings to ODS but only for 1.2 extended.

And only when the experimental mode is turned on.

Change-Id: I49dc8a2588cae5ee4a987a47d882672efb93e1c2
Unlimited when the end row is MAXROW.

The top row may not always be row 1, so we can't rely on the total row count.

Change-Id: Ia13bf6931636b15c8b673d3eed91488e6cec0def