Will putting courses into Planner change my audit?

No. Courses entered into Planner will not affect your actual audit.

You can, however, see how the courses you have entered into Planner will apply by checking the box(es) next to each semester that you wish to include, then click Process New. 

On the left-hand side of Planner you will see how your anticipated courses apply to various requirements.  Note that you cannot save Planner audit. You may also apply a What If scenario to your Planner audit. This is especially useful if you have not formally updated your major, etc.