[Depricated] Lock Code Manager

@ethayer - Have a quick question or two. I purchased the Kwikset 916 back in June of this year (2016). I have to laugh that I searched this forum before purchasing the lock and have no idea how I missed your SmartApp… So my apologies if this has been asked before. I found the following thread which appears to be quite useful: Helpful Hints -- the Kwikset 916 Lock

My questions are:
The first step says to “Get the Updated Device Type”. If I’ve already paired my ST hub to my lock do I need to unpair my lock from the ST hub in order to “Get the Updated Device Type”?
OR
Can I simply install your lock manager if I’ve already paired it to the ST hub and NOT “Get the Updated Device Type”?

Finally will your app recognize the master code and/or user codes I programmed into the lock using it’s own programming functionality?

Your SmartApp sounds just like what I need. I just changed the batteries in the lock and to my dismay found I had to re-program in my user codes (master code remained intact). I’d like to not have to do that again or at least to have a means to do it that can be done from my ST app.