items missing from land

Not sure if this is the place for this post, but:

I spent several hours making land adjustments, and creating new landscaping items this morning. When I logged on earlier this evening, the sim my land is on was down and I was dropped in a different location. Now the sim is back up, but a few items I created and put on the land, as well as some terrain changes I made, are missing.

Does this happen often, and are they just gone forever? I took copies of a couple of the items, but the terrain changes to adjust for fence height, stepping stone placement, etc. have seem to reverted and I have lost several no-copy items that are no longer in my inventory. Also, I notice that a lot of work my neighbor to the south was doing today is gone.

This land is at Yongma 138,236,112. Any info you have for me about this, whether good, bad, or indifferent, would be appreciated.

Had I known, I would have done something else for several hours this morning (like watch football on TV). AARGH!!!

SS

Hello Stone. Occasionally a region may crash and in an effort to recover, it may need to rollback to a time prior to work you may have done. If this should occur, any work done and objects placed after the best restore time may be lost. Region crashes are never a planned or good thing, I am sorry that you had this happen.