Does anyone know what would cause your level library to be transformed into numbered levels? I logged in to a project file and all my line work was dropped and the name was changed to a Level #. When I clicked on the information tab, it showed the image below. In the span of two days this file was reverted. Has this occurred to anyone else or does anyone have a solution to this issue?
I've seen similar issue when using DWG as active file after Compress Design. the Level Display sometimes does not show any level, though Level Manager is OK. after MS is closed and open again, everything is fine. anyway, not sure if it has similar cause as yours case
/pt