Since the story canon – Knights of the Old Republic. 432k42
Nerd Union has written a great piece about this. Here’s a few of the reasons they give:
- The ships in the holo when Princess Leia brought supplies
- They Keep Developing the Mandalorians
- The Great Scourge of Malachor
For the full They conclude with this:
It’s also possible that this is the same place the First Order disappeared to in order to grow strong in the Clone Wars) stated in a recent interview with Slashfilm, “I wanted to put a nod to this new history we’re seeing in The Force Awakens. It’s important to have these links between stories in major ways and subtle ways. Here you find a sword we’ve encountered before, and it gives a little more context to something that turns up later.” So anything’s possible.
All in all, we think it’s an know what you think.