Hierarchy Guardian – Safe Hierarchy Cleanup for 3ds Max

Clean and fix imported CAD, BIM, DWG, and SketchUp scenes reliably in 3ds Max

Description

Hierarchy Guardian is a professional 3ds Max plugin built to analyze, clean, and validate complex scene hierarchies for ArchViz workflows. A robust tool to clean up imported CAD or BIM scenes (DWG, DXF or SKP files) from applications like AutoCAD, Revit, SketchUp, and other external sources.

Imported scenes often contain deep and chaotic hierarchies, technical placeholder nodes, broken group structures, inherited scale issues, and unstable transforms. These problems may go unnoticed at first, but they often surface later, breaking animation, instancing, lighting setups, or downstream exports.

This production-proven tool helps you fix imported scenes in 3ds Max by safely cleaning and simplifiying hierarchy structures while preserving the scene integrity.

Hierarchy Guardian takes a safety-first, analysis-driven approach.
Before applying any change, the plugin analyzes the scene hierarchy and generates a clear report showing what will be modified, what will be preserved, and the estimated cleanup impact. This allows you to clean imported scenes in 3ds Max with full confidence, knowing exactly what will happen before committing any operation.

To ensure full control and peace of mind, Hierarchy Guardian includes a robust protection system.
It can automatically create Hold snapshots and full scene backups before performing hierarchy cleanup operations. You can restore the previous state at any time, making experimentation completely safe even when cleaning large imported CAD or BIM scenes.

Designed for professional ArchViz pipelines and large production scenes, Hierarchy Guardian gives you precise control over 3ds Max scene cleanup workflows while preserving instancing, constraints, cameras, lights, proxies, and architectural intent.

The plugin scales reliably on heavy imported scenes, producing clean, readable, production-ready hierarchies you can trust.

Features

• Pre-cleanup hierarchy analysis with detailed structural diagnostics
• Clear analysis report showing node counts, hierarchy depth, risks, and expected cleanup changes
• Exportable analysis report to text file
• Estimated Cleanup Impact (Low / Medium / High) based on structural intensity
• Clear preview of scene cleanup actions before anything is applied
• Preset-based cleanup strategies for CAD, BIM, ArchViz and asset library imports
• Safe hierarchy depth reduction with configurable maximum depth
• Intelligent rules to prevent unsafe reparenting (multi-child nodes, meaningful names, sensitive objects)
• Group-to-hierarchy conversion, including complex structural group hierarchies (typically coming from SKP files)
• Removal of technical placeholders, meaningless dummies, and leftover import nodes (such as CAD blocks or linked CAD geometry)
• Detection and optional fixing of inherited or corrupted scale issues
• Protection system for cameras, lights, proxies, XRefs, hidden or frozen objects, animated or constrained nodes
• Automatic preservation of object instancing and instance relationships in 3ds Max scenes
• Safety workflow: Hold snapshot + optional full .max scene backup before cleanup
• Restore previous scene state or last backup at any time
• Post-cleanup validation to detect unexpected changes and ensure scene hierarchy integrity
• Additional scene cleanup tools:
  – Flatten splines in Z (ideal for 2D CAD imports)
  – Remove all splines (useful for imported 3D models)
  – Sanitize object names (removes special characters and resolves duplicate names)
  – Move the cleaned hierarchy to new layer
  – Delete empty layers.
• Comprehensive toolbox for targeted scene cleanup actions on selection
• Optimized performance for large, complex 3ds Max scenes and heavy CAD/BIM imports

The Hierarchy Guardian Workflow

Clean hierarchies. Predictable results. Zero surprises.

Know exactly what will happen before you clean.

Hierarchy Guardian is a robust professional tool for safe hierarchy cleanup in 3ds Max, designed for studios and artists working with imported CAD, BIM and SketchUp scenes.

If your workflow depends on stable scene structures, safe cleanup operations, and predictable ArchViz pipelines, Hierarchy Guardian is built for you.

More Info

Check out the Tutorials and Documentation for examples and further information.

3dsMax version required: 2019 or higher.

Last update: April 3, 2026

Purchase / Try

Or get the trial version.
This is a fully functional 10-days trial.