I was playing with a loco that used them and also called them up in my GG20, not realising they were not on the DLS. Won't make the same mistake twice, sorry.
You can copy the flare assets from 2006 by opening them for editing and copying the files out. You will have to use PEV's Texture 2 TGA tool to extract the texture files from the compiled files, then write a texture.txt file to suit the texture. Delete the original compiled texture file and commit in TS10 or 12. I thought I had mentioned this in a post somewhere.