Disapearing Work

created a "stone" symbol using a polyline on which I used the "fit" command.
Used the copy command repeatedly to place sotne wall wherever I wanted it.
I try to remember to save often.
Had all my stone walls drafted once and they disappeared. Drafted them again and lost half of them all over agian.
Simply dissapeared. I've looked for locked layers, frozen layers, layers turned off and stone wall drawn in the wrong layer. No Answers.
Anyone got any ideas. This is a real time loser!
Mar
Used the copy command repeatedly to place sotne wall wherever I wanted it.
I try to remember to save often.
Had all my stone walls drafted once and they disappeared. Drafted them again and lost half of them all over agian.
Simply dissapeared. I've looked for locked layers, frozen layers, layers turned off and stone wall drawn in the wrong layer. No Answers.
Anyone got any ideas. This is a real time loser!
Mar