I know it can happen when a track is particularly old.
I was trying to track down the instrumental track “Boogie Man” which was used in the radio for the video game Fallout 3.
https://www.youtube.com/watch?v=LlcP6Q-siJQI eventually found the original vinyl 78 from the KP Library which was credited to the Group Eight Players with Sid Phillips as the composer. The date printed on the label was 1960.
This is my copy which has a longer arrangement and does not feature the two clarinet solos.
clyp.it/0ivatnng
However, the track used in Fallout 3 matched the flip side of the record, “Treadin’ Light”.
To make sure it wasn’t a fluke of wrong labels, I found the 1970 KPM Brownsleeve reissue. However, the record actually announced the track numbers and the “Boogie Man” tune was still called “Treadin’ Light”.
Even stranger, the two tracks got reissued again in 1994 on the KPM CD Archives Series Volume Six. The CD purports to be tracks from the 40s and 50s which seems to be incorrect considering the original label.
“Treadin’ Light” and “Boogie Man” now each have two versions with alternate arrangements. But as it turns out the alternate arrangements were mistakenly given each other’s name.
I have also found the same “Boogie Man” arrangement on a Jump the Rhine CD which ought to be called “Treadin’ Light”.