Can't seem to set 2 threads per vega in XMR-Stak-AMD

[italianoch]

AMD Vegas preform at their best when you config XMR-Stak to run 2 seperate threads on Vega GPUs. On NHML 1.8.2.0 pre-2, adding another thread to an index on amd.txt does not stick and gets overwritten when starting the miner. This is an example of what I'm trying to accomplish:

"gpu_threads_conf" : [
{ "index" : 0, "intensity" : 1932, "worksize" : 8, "affine_to_cpu" : false },
{ "index" : 0, "intensity" : 1932, "worksize" : 8, "affine_to_cpu" : false },
{ "index" : 1, "intensity" : 1932, "worksize" : 8, "affine_to_cpu" : false },
{ "index" : 1, "intensity" : 1932, "worksize" : 8, "affine_to_cpu" : false },

However, it always overwrites and reverts to one thread per GPU. I was wondering if there was a way to enable assigning 2 threads on 1 GPU?