Thanks for letting me know about the filename convention, since I unintentionnaly used it (e.g., "RC_I" and "RC_I_CARS"). when the experiment would run the second file it would ask to overwrite data, and I didn't know why.

I did resolve this issue differently: I kept the same naming convention, but I put each input files into a different folder (in terms of file structure). As a result, I endup with two distinct data folders.