Need help with Layers

Ok, so here's my problem.

A few starters. I am using acad 2000 version.

I was editing a dwg, turned off the layers I didn't want to view and turned on the layers I did. I edited what I needed to do, then saved.

Now, when I turn on all layers, the layers I had turned off display nothing. The only layers that I can see are the ones I had turned on for my editing purposes.

I did not delete anything from those layers.

More than one file had this happen to it, while others I was working on are fine.

I have xref and nothing displayed.

I am at a lost here and am hoping someone knows what is going on.

Thanking you in advance,

Matt

What happens if you save and close out of the drawing than re open it and turn all layers on?

What happens if you save and close out of the drawing than re open it and turn all layers on?

I get the same situation

Some times if you do some thing and the changes are not displayed on the screen you need to regenerate the drawings. Type REGENALL at the command line and see if that helps.