Hi, the patch removes tags from ways not until all multipolygons are processed. This fixes some problems if one way is a member of multiple multipolygons and the multipolygons take their tags from their ways. This is a result of the thread http://www.mkgmap.org.uk/pipermail/mkgmap-dev/2010q3/008730.html. The second patch fixes some problem of the first patch including an additional algorithm to automatically close ways having both endpoints outside the bounding box. Have fun! WanMil