Bentley's translation may be fallible, but it's a huge leap ahead of other solutions. This effectively renders any modifications next to impossible. At least Bentley's translator maintains the solidity of most objects. Of course, you can export the drawing file easily to AutoCAD if your recipient is satisfied with just a drawing, not an intelligent model. In the past, TriForma's main shortfall was drawing production tools.
Engineering drawings are a highly stylized medium with a language all their own.
Resymbolization tools let you produce true engineering drawings directly from the 3D model. Image courtesy of Whitby Bird and Partners. Structural for TriForma's drawing production format attempts to alleviate these problems. The clearest example of this is the traditional single line steelwork drawing, in which a steel beam or column is represented not by its true appearance, but by a single thick line. Engineers have very particular conventions and structural methodology that must be addressed.