Yes Ludwig do misplace the snare beds sometimes. This is a 1950s wooden one of mine, and the beds are only over 50% of a panel, not a whole panel. I find that the beds are easier to photograph if you put masking tape on the edge carefully placed to follow where the edge would be if there were no snare bed.
[img]http://black.net.nz/cym2013/snarebed.jpg[/img]
These snare beds look nothing like any Supra I've ever owned, includingmy current '70s 400 and '82 (Chicago) hammered bronze 5x14 - dittowith my Acros.Like every Supra I've ever seen, mine have very wide and gradual snarebeds that are difficult to discern with the naked eye.Has anyone considered that the beds on the OP's drum have been addedby a previous owner...
I agree that the snare beds don't look like Acoustiperfect snare beds I'm familiar with. Ludwig Acoustiperfect beds are very wide and shallow and hard to see with the naked eye.
Good luck attracting Ludwig's attention regarding your one. I'd start with good photos of the bed and just asking Ludwig if they look like they are proper factory beds. Avoid pointing the finger at Ludwig and just ask if they seem non factory.
If it does come to moving the strainer and butt over one panel, I wouldn't bother to fill the old holes to start with. See how you get on with tuning. If these snare beds are as unusual as they seem then the snare may still not perform to spec. Or it may be spectacular. Who knows.