Runner's Forum: Questions about "My Runs"

I'm looking for answers to the following questions about the "My Runs" feature of this site.  Thanks in advance for your assistance.

# 1 - If I edit the name of a run, does that ruin any historical data based on the run?  Forr example, if I change "daily run" to "home run", do I lose all the data that was saved from all my "daily runs"?

# 2 - What if I delete a run entirely?  When I go back to look at my stats (miles per month, average distance, etc.) will I have lost all the data related to that run?

 I'm trying to clean up my runs by re-naming the ones I use regularly and deleting those routes that I've only used once or twice.  However, I'd rather not lose all of my data, since I've got well over a year's worth saved.

I appreciate any thoughts, help, advice, etc. 

Thanks!