Missing codes in appearance editor

I really need some help here
all my adsense codes and link codes in my appearance editor for my main page index , and single post index and also sidebar index have disappeared.

It seems only the default codes are in place.

They were all there from the beginning, then one day i went to ad a link into my sidebar blogroll and the codes for all ads and links were POOF! gone.

But the funny thing is … is that they are all viewable and in place at the site URL.
Right now you could go to the site and view absolutely every ad and link that is in place, even though none of the html codes for them are in the Admin editor.

My site is lainsurancenow.com

I have been holding off on upgrading to the newest version of word press for fear i will lose the ability to view them on the site when viewing the pages.

Has anyone ever experienced this problem?