DWG Compare Limitations

DWG Compare Limitations

Drawing comparison does not support all object types in AutoCAD and AutoCAD specialized toolsets.

Limitations for AutoCAD Object Types

The DWG Compare feature does not support all object types in AutoCAD. The exceptions include OLE objects, cameras, geographic data, GIS objects from Map 3D, non-DWG underlays, images, coordination models, and point clouds.

Limitations in AutoCAD Specialized Toolsets

When performing a comparison, importing electrical and mechanical objects is similar to the copy/paste behavior in AutoCAD, which is different from how the AutoCAD Electrical and AutoCAD Mechanical toolsets normally operate. As a result, some of the toolset components lose their custom functionality.

The following tables describe the primary limitations for the comparing drawings created with the AutoCAD Electrical and AutoCAD Mechanical specialized toolsets.

Limitations with the AutoCAD Electrical Toolset

Electrical objects

Output after using compare import command

Wires

Wires will lose some of the properties like color and size. The wire data is available in the project as layers and cannot be imported into the drawing comparison mode.

Wire number

The wire number is disconnected with the wire. The imported wire number will lose the relationship with the wire.

Source/Destination arrows

The source/destination arrows imported will not have the correct wire numbers. The source arrows and the destination arrows will also lose the relationship to each other.

Schematic terminals

These blocks will retain their electrical properties, however the terminal wire numbers will not be updated.

Balloons

The imported balloons will not be grouped and will be available only as exploded geometric objects.

Limitations with the AutoCAD Mechanical Toolset

Mechanical objects

Output after using compare import command

Mechanical symbols

Importing a mechanical symbol that's attached to an object also imports the associated object. For example, if a weld symbol is attached to a rectangle, importing the weld symbol will also import the rectangle object.

Standard parts

Importing a standard part will not update the Bill of Materials (BOM) unless you also select the associated part reference of the standard part.

Finite Element Analysis (FEA) objects and other calculation objects

Importing an FEA object will not include its mechanical data and the object will be imported as a block.

Limitations with the AutoCAD Architecture Toolset

Architectural objects

Output after using compare import command

General AEC objects

Importing an architectural object (AEC object) that's attached to an AEC object also imports the associated object. For example, if a door or window is attached to a wall, importing the door or window object will also import the associated wall object.

Limitations with the AutoCAD MEP Toolset

Architectural objects

Output after using compare import command

General MEP objects

Importing an MEP object that's attached to an MEP object also imports the associated object. For example, if a duct fitting is attached to a duct, importing the duct fitting will also import the associated duct object.

Powered by  AutoCAD ®
    • Related Articles

    • About Comparing Differences Between Drawings in AutoCAD

      Compare the current drawing either to a different drawing or compare it to a previous version of your drawing as maintained on a supported cloud account. As your design progresses, it becomes more difficult to remember what was changed from one ...
    • Drawing Tools

      Drawing Tools To access the Drawing Tools, click on the Draw tab, and then select the Drawing Tools tab. The Drawing Tools interface has three tabs on the right side: Common Commands, Common Text, Common Blocks.   Common Commands Tab The Common ...
    • AutoCAD Keyboard Commands

      Learning how to use AutoCAD keyboard commands can help you work faster and improve your efficiency. This article lists the abbreviated commands that can be used in AutoCAD (Toolbox). Toggle General Features Ctrl+G Toggle Grid Ctrl+E Cycle isometric ...
    • Overview: Sheet Set Manager - AutoCAD

      The Sheet List tab  displays an ordered list of sheets. You can organize these sheets under headings, called subsets, that you create. List of Options This tab has the following buttons: Publish to DWF Publishes selected sheets or a sheet set to a ...
    • To Work with Comparing XREFs in AutoCAD

      Use various commands and display options in the Xref Compare toolbar to review the differences between the attached xref and the referenced drawing file. Compare the Xref Changes Click View tab > Palettes panel > External References Palette.   Find ...
    • Recent Articles

    • The Range Hood - Add-on

      About the Library Add-on This is a “Master” Range Hood product capable of being used as is or saved back to the library numerous times in unlimited number of different combinations.  This Library Add-on is compatible with the Foundation Library. This ...
    • Toolbox Release Notes | Build 22.1.0406.641

      The following Release Notes apply to Toolbox Build 22.1.0406.641 Database Management Resolutions: Resolved an issue that caused template level projects to be deleted when deleting a seemingly “empty” category (this was caused by a mix-up in the ...
    • Microvellum Foundation Library Release Notes | Build 22.0407

      The following release notes apply to Microvellum Foundation Library, Build 22.0407 Please make sure you are selecting the correct specification group when drawing products. There may be specification groups for both metric and imperial. Additions: ...
    • Toolbox Release Notes | Build 22.1.0325.641

      The following Release Notes apply to Toolbox Build 22.1.0325.641 Toolfile Resolutions: Resolved an issue in certain post names where the pecking number was not working. Resolved an issue in certain post names where some face 6 machining was falling ...
    • Toolbox Release Notes | Build 22.1.0317.641

      The following Release Notes apply to Toolbox Build 22.1.0317.641 Database Resolutions: Resolved an issue where the user experience took longer than necessary to start.   Materials Resolutions: Resolved an issue where with formulated materials the ...