title: Google form inserts sheet row in unexpected location
body: <p>I am having a strange issue regarding in which row of a linked sheet a google form places a new form row.  Normally, each form submit adds a row to the sheet, starting with row 2 (row 1 is the header), as expected.  If I delete all the rows in the sheet, form submits restart at row 2, as expected.  But, now suppose I manually populate say the first 10 rows of the form (again, leaving row 1 as the header, so rows 2-11).  Now when I do a form submit, I would expect row 12 to be added to and so on but instead, form starts at row 2 and wipes out my pre-populated row data.  It seems that the form and the sheet have an internal "next row number" that is not based on the actual contents of the sheet.  Can anyone shed any light one this?</p>