DGN linetype hotfix for 2012
Previously we reported an issue in AutoCAD where imported DGN linetypes caused DWG file bloat. Soon afterwards a hotfix was released, but then pulled due to a potential data loss issue.
A revised hotfix for 2013 was released about a month later.
Autodesk has now made available the same hotfix for 2012 versions. The hotfix creates a command for cleaning up bloated files, and it also prevents the data from being copied during a copy+paste action.