@ rametto

The same procedure doesn't work on pid 3199 i0000c7f.typ Topo Switzerland V4 Winter.
You are right, I had never tried to do this and TYPViewer crashes. This is due to the ActiveRouting. Topo Switzerland has polylines for active routing but copy/paste in TYPViewer doesn't support active routing... So after you have copied your custom lines in the original file, the header of the typ file is still set for 120 Active routing lines but , in fact, there are 0 active routing lines. I'll try to fix this in the next version...

Save is ok, ExtraPois are in the typ file, but are not rendered by Basecamp?
Yes, the byte at 0x65 must be set to 0x0F....but TYPViewer doesn't do it when we proceed like you .... I'll also try to fix it.

For the moment, try this one :[Only registered and activated users can see links. ]