Add instead overwrite

[gianfelicevincenzo]

Hi, I recently discovered this program. I was considering between tdarr and this and honestly I chose this one as I saw that it is very light. My goal is to take my movies and check them to see if they all have at least one AC3 track (for more compatibility). If not, unmanic must take the audio track (possibly Italian if it is present) and convert it to AC3. Currently I have tried and the track just created in AC3 overwrites the one with which numanic took. For example, if the DTS audio track is taken it will be overwritten with the AC3 one that created unmanic. I would simply like to ADD, not overwrite. How could I succeed in this? Thank you