Readme - Exchange - Autodesk

■■■■Drawing Compare may incorrectly identify differences in Block Referenceswhen comparing drawings that are saved in 2007 DWG format. In orderto ensure accurate comparison results, it is recommended that all drawingsbe promoted to 2010 DWG format prior to being used in a drawingcomparison.There is a change in appearance of the stair path graphics for a stairterminated with a tread that have the Stair Line display property set to“Cut Plane - Parallel” or “Entire Stair”. In releases prior to 2010, the arrowwould extend to the end of the stair. It now stops at the final riser, whichis consistent with stairs that terminate with a riser or landingImported building components may be scaled incorrectly after the currentprofile is changed during an AutoCAD Architecture session. To avoid thisproblem, do not change the current profile prior to importing buildingcomponents.If you use AutoCAD JOIN command in AEC objects, AutoCAD Architecturemay crash because AutoCAD JOIN command does not support AEC objects.Interoperability with Previous ReleasesData■■Beginning with the 2008 release, AutoCAD Architecture uses greaterprecision when performing internal calculations. Thus there may be minordifferences in reported values compared to earlier releases. This isas-designed, and data reported in the 2008 and later versions is moreaccurate.A problem with calculating slab perimeters was fixed in AutoCADArchitecture 2008. As a result the values of certain automatic propertiesmay change. The new results are correct.Spaces■Openings added outside a surface area in AutoCAD Architecture 2008 willhave different locations when opened in AutoCAD Architecture 2012.MasterFormat 2004■Beginning with AutoCAD Architecture 2008, the US Detail Componentand Keynote databases use the CSI MasterFormat 2004 standard. Usingthe Detail Component/Keynote Database Migration utility to migrate your20 | Chapter 1 AutoCAD MEP 2012 Readme