Texture replace

[Grim Tuesday]

OK, so I am mirroring a map, and it has loads of dev textures on it. I would like to replace all the blue one (which I built the map in) which red ones, on the mirrored side. However, when I run the texture replace tool, it replaces all of them in my map, even if I have only the ones that I want selected. Furthermore, the "change only ones selected" option is grayed out. What can I do, besides replacing each texture individually?

 

[A Boojum Snark]

You need to have the object selected, not the faces. So it's usually best to do it after you flip the map before you deselect the new half.

 

[gamemaster1996]

To do this:

Copy the bit you want to mirror
Paste into a new window in hammer
Click replace as you want
Copy
Paste back into map.