This looks awesome in game, but I'm not keen on starting a whole new save. Any chance of making all these deco foilages a standalone mod for replacement in other maps?
you could try changing the file name of this to match the original and overwrite the map. no promises it wont obliterate your current save but it could work?
Yep, though I suggest starting a new savegame of the old map, renaming this map file, and then checking if it changes anything in that savegame so you don't accidentally wreck anything of the one you wanted to save the progress on.