We keep a lot of stuff on our server, and I was surprised at this behavior, I didn’t see this with V5 with .stl files. I have a scripted export routine that saves an.stl with pre-set settings, and as it uses the dash version of the command, it automatically overwrites an existing .stl with the same name in the same directory without the user warning.
With V5, this worked fine, with V6, I see I am getting .stlbak files in the same directory when I overwrite. I assume this is the same mechanism as the .3dm/.3dmbak file saving procedure - but which I have turned off…
OK, now I also see something with the .3dm files on our server, if I have a file open and I hit Save, it doesn’t create the .3dmbak file - as I have backup creation turned off - but if I hit SaveAs and use the same file name to overwrite, once I accept the warning message, a .3dmbak file is created.