Resaving a map in editor removes materials that were applied via script

[Dreikblack]

1. Create a brush.

2. Apply a texture  with console commands:

local texture = LoadTexture("/Materials/Developer/trigger.dds")
            local material = CreateMaterial()
            material:SetTexture(texture)
            local selected = program:GetSelection()
            for n = 1, #selected do
                local currentBrush = Brush(selected[n].entity)
                if currentBrush ~= nil then
		            currentBrush:SetMaterial(material)
                    currentBrush:Build()
                end           
            end

3. Save map - material can be seen in .ultra file.

4, Save map again - material is gone, Brush still have a line in .ultra: "material": 1