To Redefine the Catalog Parts in a Drawing

Use the Redefine from Catalog command to review the pipe, cable tray, conduit, duct, fittings, and MvParts in a legacy drawing and then update the eligible parts in the catalog. This command will only swap a part if it is already in the drawing and if the part in the catalog matches the part parameters for the specified domain. This command updates the styles for the selected objects.

1. In AutoCAD MEP 2025 toolset, click Manage tabMEP Content panelRedefine From Catalog.
   Note: You can also enter RedefineFromCatalog at the command line.
2. Note the prompt on the AutoCAD MEP 2025 toolset command line: Redefine the parts of the type [Cabletray/cOnduit/Duct/Mvpart/Pipe/Select] <Select>:
3. Specify the parts to redefine by typing the applicable letter and then press Enter:

   While the command is running, AutoCAD MEP 2025 toolset checks each part for a match of the part ID and other parameters in the appropriate domain catalogs in the drawing. If a suitable match cannot be made, the affected part remains unchanged.

   A progress bar displays the number of parts validated and the number remaining. When the redefinition task is completed, a report summarizes the results, including the number of parts reviewed, and the number of parts successfully updated. The report also includes a link to a file that contains these details.

   Tip: For legacy drawings that contain conduit content, AutoCAD MEP 2025 toolset automatically updates the nominal size parameter. Use the Redefine from Catalog command to update bend radius and outside diameter.