I bought Affinity Photo, impressed with all of its capabilities. I also use it in game development, and was very surprised to find that it doesn't support exporting TGA. It's bizarre. At least with BMP, I can copy and paste into another program and save. TGA includes layers and channels that just aren't easily copied/pasted. I'm not only very surprised that there is no support for TGA, but even more surprised that the request was put in two years ago, and hasn't been taken seriously. Please add support.
That being said, I am very glad it can at least open TGAs. That just makes it even more confusing that I can't export, but at least I can make an edit to a combined RGB, single layer TGA and save in a different program that does support it.