Heads up problem on saving files

I just encountered something I had never seen before.

I created a rhino file with curves on different layers. I saved the file.

When I reopened the file, the only layer was DEFAULT. It looked like everything (I hope) was moved to the default layer.

The united were changed to Microns from Inches.

And the preview image shows the contents on different layers.

Hi -
Can you provide steps to reproduce any of these issues?
-wim

Sadly (or fortunately) I have not seen this before. I uploaded the file to the support site. my guess is all you are going to see is the preview image and the contents are different.

Hi -

That’s correct, yes.

Please let us know if you run into this again and hopefully some leads as to which actions might have contributed.
-wim