this is in acade but i believe it to be an issue in the underlininng autocad
i working my way through a series of drawings purging out the drawings final visula checks ets
whats happeining about 25% of the time is this
if the drawing happens to be on layer 0
i purge the drawing and the current layer will change to another layer
whats intresting is this layer has nothing on it and would have been deleted in the purge
so i need to change the layer run purge again to clear the final layer
its not the same empty layer it appears to be the first empty layer in the project
any ideas whats happeining ?