1. Create an empty org file

2. Insert

* Test

* Test 2

3. With the cursor at Test, hit C-x n s to narrow the view to the Test subtree

4. Hit C-c C-s to schedule the line at any date.

As a result, the SCHEDULED keyword is _not_ included in the narrow view, and inserting things after the Test heading moves the SCHEDULED keyword away from its second-line position.

Cheers,

Michaël