If the suites are in the same company... you don't need to copy them or even change the suite as suggested..
I have Dev and Prod suites, because the props/eVars/events/etc are all the same.. I just use the prod segments in my QA suite... there's no problem...
Unless you have a specific dimension that is holding different values between your environments that the segment relies on to work (which seems unlikely) the segments can be used as is...
When I want to test some new implementations, I open existing Production Workspaces (with all the segments and metrics), and I just change the suite to QA.... I just don't save the Workspace when I am done so that everyone using it will still see Prod data.
If I am creating a new segment against Dev data.. I will build it in Dev, tweak it til I am sure it's good, and when done, I will switch it to Prod suite... but then I will continue to use it with Dev data, the same way I use all my segments.... I don't really see much point in trying to maintain 2 copies of segments that are completely interchangeable....