Setting media still filename and having it stick

I'm trying to set the filename of a media still on an ATEM switcher. When I sent the command to set the filename, I see it changed in all software control panels currently connected to the switcher. However, if a new connection were to be established to the switcher, the filename reverts back to its original filename.

Is this what is supposed to happen? Do you need to request a lock on the still before changing its filename?