Server crash resets ~50 blocks around spawn

Occasionally, as most servers do, my server crashes, often for various reasons. A rollback then occurs where everyone's data gets reverted to when they last logged on, which is pretty annoying, though I can kinda handle it. What's more frustrating is that the spawn area rolls back to what it was a couple of months ago. It's not to where it was when the world generated, just back to what it used to be around November. This is particularly impractical as a new spawn is being built at the moment on a copy of the spawn area and I don't want to have to constantly copy and paste it back in when the server crashes. Any ideas? We have 4GB of RAM and ample disk space and are hosted with Beastnode if that helps.

Oops, accidentally double posted. :/

EDIT by Moderator: merged posts, please use the edit button instead of double posting.