Hi,
Unfortunately, I need to take back my last comment. The behavior I described seems hit and miss. Here is the situation restated:
I'm an organization nut. I like to see things set out in an orderly fashion, and have things named in a logical way. This has absolutely nothing to do with the functionality of the app. It only has to do with what I see when I am doing data mapping, and my sense of tranquility. 
I add a Select component and change the name to timezone.
When I go to data mapping I see:
timezone
Selected
Visible
mobileselectmenu_54-0
Value
Label
However, sometimes, rather than mobileselectmenu_54-0 it is timezone-0. I would much rather the name of the item be consistent with the name of the Select component. See the screen shot below where two Select components are in the same app. I cannot figure out why one has the item named after the component and the other doesn't.
Again, the only thing "broken" is my desire to have consistent names.
Thanks, Fred