sorry didn't mean to be misleading... by template file I mean just a file that has the layers already set-up. For isntance I have a series of maps that all have several text layers, then a blue reveal layer, a rock layer that has bevel and shadows already applied to that layer, then a grid layer.

That file is saved as DungeonMapBase and when I want to make a map in that style I open it, save as whatever, import a new outline from illustrator and everything is in place.