[Bug Report] URDF Importer document needs to be updated

[fan-ziqi]

Describe the bug

URDF Importer bugs in v2.0.0:

1. After adding dont_collapse="true" to the fixed joint, it will still be merged
2. Unable to output one USD file, but instead output multiple USD files, which conflicts with existing documents

#1760 #1800

System Info

• Commit: main
• Isaac Sim Version: v4.5.0
• OS: Ubuntu 20.04
• GPU: RTX 4090

Checklist

• I have checked that there is no similar issue in the repo (required)
• I have checked that the issue is not in running Isaac Sim itself and is related to the repo

[RandomOakForest]

Thank you for posting this. This will be addressed by the team.

[GiulioRomualdi]

Hi all! I'm actually experienced

1. After adding dont_collapse="true" to the fixed joint, it will still be merged

what I noticed is that importing the model from the GUI works

[likesweetie]

how's going on with this issue? I'm also struggling to renoveting my old USD on new isaac lab 2.1