Results getting prepended instead of appending to the excel file

The new rows data is getting added to line #1 and pushing other results down. How can fix this behaviour?

From the context menu, I select: Modify | Insert | Rows | Last. A dialog box pops up. Accept Number of Rows: 1 by clicking on [OK].

Hi, the excel variable you are writing to must be a global variable.  Otherwise the next time it loops it has not held on to the previous data and sees the first line as an empty line.
Hope this makes sense.  If you need anything else, please let me know

Also, please check that you are not writing into a cell using static reference.
E.g. Always insert a row after cell A1, instead of inserting a row based on what active cell/found cell is.

Thanks Emma/Ivan. 

This was resolved. Had to make it global variable.