Concerns regarding map wipe

I think it’s pretty cool, that we’re getting new wilderness, so I have a question regarding the process of wiping.

if you’re a town mayor you get to see a lot of new players just visit the server and never come back, and sometimes they claim plots if they join a town, put a thing or two and never use it. And since it’s kind of pain in the ass to later clean the plots and prepare them for new town members (locked chests, furnaces, sometimes griefed areas cause before leaving owner of the plots set perms to everyone). So my question is, if I unclaim the plots from the town before the wipe, will these areas (usually inside of the town) get reset as well? Or is it more like copying and pasting the towns onto a new map, so the plots inside remain untouched?

Thanks in advance for the answer