Delete the old map version from your mods folder, Unzip the new downloaded file, Place the map zip into your mods folder. Start a new game do not use the old version save.

Here's the new update for Pine Cove.

The map has been updated with my latest template so it now has the following:
Sugar cane, cotton, lucerne, gmk, new storage, new installed mods, new textures, revised area layouts, dirt and terrain and heaps more. Have fun with it.