Thanks Lisa!
To elaborate, NAP changes (name, address, phone, website) must be made through our verification partners, which are Google and Facebook. These are sources we use to verify the quality of the location data submitted to Moz Local. You can see which verification partner a business location is using right in the dashboard as seen here. Once the change is made on Google or Facebook, Moz Local will automatically detect the change and resubmit the corrected information to our partners.
Non-NAP changes (social links, images, etc) can be submitted through the Moz Local dashboard.
If you're not making any changes, then there's no need to resubmit since all data is re-submitted to our partners every 1-2 weeks, automatically. You can verify this by looking at the accuracy metrics in your dashboard.
To be extra thorough, if you're making a change to your NAP, you can add the old business information to the "alternates" feature in the duplicates section. Though we will push the corrected listing information to all of our partners, this can be a way to be extra sure your old NAP information isn't popping up as a duplicate elsewhere online.
Hope this helps!