Hi all, today I noticed a bug in LineMergeFilter. I am not yet sure how to fix it. I has at least a bad impact on performance, maybe it also causes redundant data in the map. It merges for each resolution also the lines of all higher resolutions, which are later simply dropped. The bug is that it modifies the original line objects instead of copies, so I assume that some lines are saved multiple times, once as part of a merged line, once as single line. No need to wait for a fix, afaik maps are okay. Gerd