[experiments] Despite atnt/2 shows on the experiment display, atnt/1 is still chosen

If you fork this experiment:

https://www.beat-eu.org/platform/experiments/tutorial/tutorial/full_isv/2/atnt_isv_DCT12x8_100G_U50/

You'll see the datasets for ATNT/2 are chosen for you.

If you run it (the experiment will fail, but no worries), you'll see that the toolchain shown on the bottom indicates that ATNT/1 datasets are still chosen in stead of what is displayed. Must be a bug.