Uncommon Fixture library

I have a new show that I started using the latest fixture library. When I went to select some fixtures, I found that they are no longer in the library. I had these fixtures on an older show so I was confused as to why they disappeared. When creating the show, I did notice another library called Uncommon fixtures or something like that. Anyhow, I created another new show and picked that library. It had the one fixture I was looking for but not others. How do I start a show and be able to have all of the fixtures I need?

Thanks,
Ross
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