Open a pts file (csv) and in step 2 plot an objectid id (e.g., "1"). Leave that plot open and then go back to step 1 and change the user_vi from "nbr" or "ndvi" to whichever one it wasn't before. Rerun the visualization in step 2. The plot will not change but it should.
Update: I believe NO changes to user_configs.ini are respected without closing and re-opening program. This has worked previously and I'm now using S2 data which MIGHT be the issue though it seems odd...
Open a pts file (csv) and in step 2 plot an objectid id (e.g., "1"). Leave that plot open and then go back to step 1 and change the user_vi from "nbr" or "ndvi" to whichever one it wasn't before. Rerun the visualization in step 2. The plot will not change but it should.