Hello Pijotre and Jnils, thanks for the answers.
Yeah, had no way of getting the sourcerect infos for the official map, hence while I had to mess with it.
I tried again with your settings but I still have the map show black and game closing without warning when I try to show the map.
Your map works though but appears distorted (and I couldn't manage to fix the size to get it to work but I didn't try very hard).
Mine works if I export using BC3 / DTX5 as compression with default format. File is bigger, but I'm not 100% sure what size the image is supposed to be exactly.
I had used a cropped up version of just the area for Fowlumbra itself, using the oil painting filter on the areas that can't be accessed (see attachment), with the code as said above.
<ImageStyle Name="exp12_rgn_umbra02_epic01" displayname="Fowlumbra" menugroup="Terrors of Thalumbra" zonerect="-189,-532,1066,929">
<ImageFrame Source="images/maps/map_exp12_rgn_umbra02_epic01.dds" SourceRect="0,0,436,506" />
Fowlumbra spawns exactly at the same hour every day, aka 24h since last opening (+/- 1h). If player doesn't come in that time frame, the next player will trigger the zone instantly
Fowlumbra can't be triggered several times on a single character (I delete and recreate the char every time I want to go in). But with the 24h timeline (and the possibility of another player triggering it), I couldn't test the map without having it in the menu, hence the menugroup for testing purposes.
It's the only way to make cash on Test Server, so i do run the zone quite often and it always annoyed me to no end to not have the map and some PoI would be interesting too... but you can't pinpoint the ducks without a map!
BTW, while I'm at it. While waiting for an answer, I mapped another of my pet-peeves (and I understand why it was never mapped, the player who started probably stopped midway), aka The Vigilant. I went with the raid which is the full zone mapped all walls and went straight to turning it into a working file with the raw data. No way I can clean this up without the ingame map, it's way too complex ^^
Anyway, I have a working (and ugly as hell) 10-layers massive map (380x1576), needless to say it lags a lot between maps. What final size should I try to reach? I attached the biggest layer (main deck) as an example.