Volume problem with scene

Hi the community :relaxed:
I have an issue that I have not had before:

  • Track 1 -> thru machine with my modular gear in input A B -> scene A location 1
    (track 1 volume up & track 2 volume down)
  • Track 2 -> flex machine with a sample (a recorded version of the modular) -> scene B location 16
    (track 1 volume down & track 2 volume up)
    The thing is when I switch to scene B to A, there is no volume on the thru machine but very slowly the sound starts coming back reaching its maximum volume progressively.
    I have this issue only with the thru machine it seems…
    Thanks in advance for your help.
    :relaxed:
    Maxime