Works great so far - will check with yields as I got. Not preserving over age transition doesn't feel like that big of a deal so far since most of the planning needs to be redone anyway. Then again, it could be useful to have an option to place later era tacks as well so that you could future plan more easily - but then you're having to search through a massive number of tacks to find what you want... and then we'll ask for a tack-search function... its really never ending, isn't it? Thank you for your work on this - it is greatly appreciated!