Before I go & do something I don't need to do, I wanted to ask the question here. I purchased a new computer several months ago & I suppose when I transferred all my files over, I must have forgotten to transfer my Harmony software. It's been awhile since I needed to update it so when I went to do so today, I discovered that I must not have transferred over the program because it's not on my computer. But before I do a new install, I want to make sure it's necessary. My Harmony One remote is set-up for my current a/v system, but I just bought a Roku 3 & wanted to update my Harmony to accept it. That's when I discovered I don't have the Logitech program on my computer.
Do I need to re-install the software from the Logitech Harmony One CD? And if so, when it tells me to plug in the USB cable to my remote, will it wipe out the Harmony's current settings making me start over entirely from scratch? I really don't want to have to go through that again if at all avoidable.
Please advise.

Thanks,

Ken