Well they had another reason for that. They originally had designed NEW uniforms, which kinda looked like a combination of TOS Movies 2-6 uniforms and TNG uniforms... They had the division color torso and black shoulders of the TNG uniforms, but they had the shoulder flap of the TOS movie uniforms. The rank pips were placed at the corner of the flap.The collar of the uniform was the division color instead of black, and they had rank braiding on their sleeves like the TOS uniforms. They decided to ditch them at the last minute and borrowed uniforms instead.I can image that. They produced the movie so quickly, the didn't even have enough time for costume fitting. La Forge und Riker wore O'Briens/Siskos uniform, hence the folded sleeves.
Yeah, I'm so glad that the current writers actually pay attention to what the other writers are doing. It makes the stories a lot more detailed and in depth, because they have more of a past, and more of a RECENT past, than if they just had the series/movies plus one or two random events that the author makes up and then has to sit there and explain in order for the reader to get it. You are able to see what's going on in their lives in a much broader way and it really makes the stories and the characters seem much more complete and real. I like that a lot.That's luckily in the past. In the last fifteen years, Pocket Books have paid much attention to continuity in the books. With the Destiny-trilogy, it feels like one whole Star Trek-universe rather five different series.