After the movie shut down, DS9 got the new uniforms, and Voyager got the Borg stuff.
It was a fair split.
That would make those uniforms third hand no matter how well you cleaned them if Berman told the Season 6 cast of Voyager that it was this that they are now wearing.
Although Admiral Janeway's future uniform had been seen on DS9 the Visitor and TNG All Good Things... If you harvested DNA from the gusset of that costume to make a clone, it's unsure whether you would be growing a Farrel, McFadden or Mulgrew baby till after she had been poured out of its test tube.