All of the builds that are present on disk do not show up in the 'Build History' in the latest jenkins.
I noticed the problem happening where only the last build or last couple builds would show up with the newest version (1.492). I then decided to go back to the latest stable version (1.480.1) to see if that solved the problem. The problem again occurred. I had only build 11 showing for my job, and I rolled back all the way to 1.455, a known stable version. All 11 builds showed back up in the build history.