Since CentOS 7 will support In-PLace Upgrades will ClearOS 7.1 support it as well.

Like upgrading 6.6 to 7.

I have a lot of files stored on my 6.6 I do not have the time to transfer everything off reinstall fresh and then transfer stuff back on.

an In-place upgrade is all I can do or I am stuck until the system breaks which could be a long time.