When LaunchInSeparateProcess is true and you run DZ, Slick will prompt with the "Modified Buffers" dialog with saveall/diff/savenone, etc.
The treatment for Untitled buffers here is different than when you close a workspace or close Slick.
In those cases, Untitled buffers get auto-saved.
Here, it prompts for a filename to save them.
2 things then:
#1: It should be consistent with other instances of this dialog
#2: It shouldn't complain at all about untitled buffers because the DZ cannot possibly involve the untitled buffers in the diff anyways - so there is no reason to save them.
#3: Really, it should only prompt to save modified buffers for files that the DZ will be diffing.
There is no need to save buffers that aren't going to be involved in the diff.