Tech Tree Icon

[Allein]

I'm still working on a new tech tree for my mod, so far everything loading and working fine, except for one thing every tech are Pottery picture. I found the Tech icon are set-up in the UI/Icons/Icons_Tech.xml, I know that if I want to reuse the picture of the old tech tree I need to put my tech in there with the picture I want. But my problem is more how to load that modified .xml in the mod ? I've tried to load it like other database files but that doesn't work...