Issues converting scroll bar components from AS2 to AS3

Question

I am working on editing a document that has scroll bar components that I would like to convert from AS2 to AS3 since everytime I try to open the document it shows a WARNING and won't convert them and when I publish and look at the final document the scroll bar seems to act unusally since it is obviously still on AS2.
Here are two of the scripts I finally was able to find within it. Should I fix it and how so? This first is for the "Creative Scroll Area" and the second is for the "Creative Scrollbar"
package  {
          import flash.display.MovieClip;
          public class Creative Scroll Area extends MovieClip {
                    public function Creative Scroll Area() {
                              // constructor code
package  {
          import flash.display.MovieClip;
          public class Creative Scrollbar extends MovieClip {
                    public function Creative Scrollbar() {
                              // constructor code

Answer 1

Okay, well I know the code is making a scroll bar and a scroll area and under the "type" it says they are "compiled..." which is unusual since most of the other components I've worked with have been movie clips or bitmaps. Do I need to look up what AS3 components I need to replace the script from above? Because when I looked for that I couldn't specifically find what I needed or really understood if I was looking at the right information.
Here is something I found when trying to "debug" it:
WARNING: The component 'UIScrollBar' requires ActionScript 2.0, which is not supported in this version of Flash Professional.
WARNING: The component 'Creative Scrollbar' requires ActionScript 2.0, which is not supported in this version of Flash Professional.
WARNING: The component 'Creative Scroll Area' requires ActionScript 2.0, which is not supported in this version of Flash Professional.