The Mystery of Led Zeppelin- Channel Switching

Has there ever been an explanation for the channel switching on the various masterings of Led Zeppelin's first album?
While comparing tracks from Mothership to previous releases here's what I found regarding the acoustic guitar intro to "Babe I'm gonna leave you"

Atlantic vinyl 8216- left channel
Atlantic vinyl 19126- right channel
Original CD (Diament)- right channel
Remaster CD (Marino)- left channel
Classic Vinyl (Grundman?)- right channel
Mothership CD (Davis)- left channel

I figure this has come up before here but I was wondering how and why this happens. There seems to be no rhyme or reason to this and it really doesn't detract from the listening pleasure but it sure is perplexing.
I figure the masterings with the guitar in the left channel is the way Jimmy intended it which makes the fantastic Classic records and Barry's CD versions backwards.

 

Dunno if you knew this already, but the entire original CD of the debut album (Barry Diament mastering) has reversed channels compared to the '94 reissue. I'm wondering about this myself. The only discussion you ever see here concerning reversed channels is about some original issues of IV.

 

On second thought, I vaguely recall reading a post about this here once. I don't think it generated that much discussion. I think it's this thread:

http://www.stevehoffman.tv/forums/showthread.php?p=1379639

Here are other threads that came up in a search:

http://www.stevehoffman.tv/forums/showthread.php?p=2926394

http://www.stevehoffman.tv/forums/showthread.php?t=6757

 

Well you know, if you're going to keep re-releasing the same material over and over you've got to keep it interesting for the fans...
I suspect it's just like when magazines print photos backwards. Somebody just wasn't paying attention.

 

Exactly. It should always alternate between left= left to left= right.