Voyager, in contrast, at least had the recycle bin enabled.
I would remind you that it seems to be very common in Star Trek episodes to forget how reading data works. When the doctor was first outgrowing his program, they had to use up the “diagnostic hologram”'s program to repair his. Apparently they didn’t understand backups at the time. And when Ed Begley jr downloaded a bunch of data from Voyager (including the Doctor) it deleted the original.
On the other hand, the existence of the backup Doctor in the Warship Voyager episode shows that they finally figured out a way to copy data without destroying the source.
I would remind you that it seems to be very common in Star Trek episodes to forget how reading data works. When the doctor was first outgrowing his program, they had to use up the “diagnostic hologram”'s program to repair his. Apparently they didn’t understand backups at the time. And when Ed Begley jr downloaded a bunch of data from Voyager (including the Doctor) it deleted the original.
On the other hand, the existence of the backup Doctor in the Warship Voyager episode shows that they finally figured out a way to copy data without destroying the source.