Dynamically adding a table row with jquery, then add auto populate select box in each new row

Answer 1

You may have issues with ID's clashing and event binding. Try using live();

Your events are getting unbound when you clone and move DOM elements around.

Try this:

$("#add").live("click", function() {
$("#selection").live("change", function() {

Also it looks like you may be duplicating ID's. Check and make sure that #selection, #selectionresult, etc are not being cloned.