All my 8 tracks had the same order as the record. I had a whole box of them (still have a few). But they did do the fade out/fade in as the track swapped. It sucked, but how else could you listen to your tunes in the car? But the order was maintained. If the album was 41 minutes, they used a 41 min loop, and sometimes the track swap was 30 seconds into start of a 4 minute song, sometimes near the end. I don't think I EVER had an 8 track that moved the songs to "fit" a 10 minute side. Most likely the songs wouldn't have fit unless you used a longer tape and had some dead air. They didn't want that!
There might have been a few oddball instances where it was done, but it would be a rarity. Bootleg 8 tracks would be the most likely instances, not major record releases.
My cousin had an 8 track recorder. When he dubbed a record, he didn't bother with fade out/in. Just let track switch and live with the glitch!
I didn't buy many prerecorded cassettes. Hendrix Rainbow Bridge, Rory Gallagher Irish Tour 74 and a few others. I would just buy C90 cassettes and dub my records to one side, and sometimes if I had enough time, I might add another song from another album, but I'm not mastering anything.
In any case, with a CD, there's no "fitting" to be done. You have 74 minutes maximum. You don't need to worry about dead air if you only have 43 minutes. It stops on it's own. It doesn't matter if it's a 3 minute single on the disc, or 1 hour symphony. You don't have to worry about overblown bass not tracking, or getting increased noise from the inner grooves. Maximum level set is maintained from 0 to 100%.