Creating a linked duplicate of a linked collection, removes all empties on re-load #110744

New Issue

Robert S · 2023-08-03T09:39:23+02:00

Robert S commented

2023-08-03 09:39:23 +02:00

System Information
Operating system: Windows-10-10.0.19045-SP0 64 Bits
Graphics card: Quadro RTX 3000 with Max-Q Design/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 536.67

Blender Version
Broken: version: 3.6.1 Release Candidate, branch: blender-v3.6-release, commit date: 2023-07-16 02:43, hash: edc1a09966a7
Worked: (newest version of Blender that worked as expected)

Short description of error
This is related to the UX disaster which is this:

#110717 (comment)

Imo, linking should be restricted to an experimental branch of Blender, as it does not seem ready for production.

Exact steps for others to reproduce the error

Link a collection with a lot of hierarchial objects
Override everything down to the materials (requires several steps?)
Select the top empty in the outliner and choose "select hierarchy"
Hit alt-d to create a linked duplicate and confirm
Hit m to move the entire duplicated hierarchy to a different collection
Unlink the previously linked collection
Save the file and re-load

Result:

All empties are gone from the file, and only a flat list of objects remain

Expected:

The duplicated hiearchy should stay intact!

**System Information** Operating system: Windows-10-10.0.19045-SP0 64 Bits Graphics card: Quadro RTX 3000 with Max-Q Design/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 536.67 **Blender Version** Broken: version: 3.6.1 Release Candidate, branch: blender-v3.6-release, commit date: 2023-07-16 02:43, hash: `edc1a09966a7` Worked: (newest version of Blender that worked as expected) **Short description of error** This is related to the UX disaster which is this: https://projects.blender.org/blender/blender/issues/110717#issuecomment-991171 Imo, linking should be restricted to an experimental branch of Blender, as it does not seem ready for production. **Exact steps for others to reproduce the error** 1. Link a collection with a lot of hierarchial objects 2. Override everything down to the materials (requires several steps?) 3. Select the top empty in the outliner and choose "select hierarchy" 4. Hit alt-d to create a linked duplicate and confirm 5. Hit m to move the entire duplicated hierarchy to a different collection 6. Unlink the previously linked collection 7. Save the file and re-load Result: All empties are gone from the file, and only a flat list of objects remain ![image](/attachments/27a1abc9-6dfc-4369-82f4-29751e2555a2) Expected: The duplicated hiearchy should stay intact! ![image](/attachments/f9ebb2c6-120a-40da-a274-eccf0d9b5a94)

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Robert S added the

labels 2023-08-03 09:39:24 +02:00

Robert S commented

2023-08-03 09:50:32 +02:00

A workaround is apparently the following (so far):

Link the collection with the "instance collection" option OFF
Select hierarchy and make library override for selected and data (optionally do this again on objects to override materials)
Hit M to move the selected hierarchy to a new collection (this doesn't move it, it links it) 😑
Unlink the previously linked collection

Any other procedure will result in LOSS OF DATA!

Even after doing the above, you need to save and re-load the file (or perhaps clean up unused data-blocks) before you're allowed to begin deleting things in the linked hierarchy...

I know developers don't care about UX, but holy crap working with links feels extremely fragile in Blender!

A workaround is apparently the following (so far): 1. Link the collection with the "instance collection" option OFF 2. Select hierarchy and make library override for selected and data (optionally do this again on objects to override materials) 3. Hit M to move the selected hierarchy to a new collection (this doesn't move it, it links it) 😑 4. Unlink the previously linked collection Any other procedure will result in LOSS OF DATA! Even after doing the above, you need to save and re-load the file (or perhaps clean up unused data-blocks) before you're allowed to begin deleting things in the linked hierarchy... I know developers don't care about UX, but holy crap working with links feels extremely [fragile ](https://projects.blender.org/blender/blender/issues/110742)in Blender!

Robert S referenced this issue

2023-08-03 13:37:01 +02:00

Library overrides get reset when the linked file changes #110742

Germano Cavalcante commented

2023-08-03 19:33:08 +02:00

Could you provide a simplified file where we can confirm the problem and forward it to the developers?

It's not clear to me what the hierarchy and arrangement of Empty and Non-Empties objects should be in the file to be linked.

Could you provide a simplified file where we can confirm the problem and forward it to the developers? It's not clear to me what the hierarchy and arrangement of Empty and Non-Empties objects should be in the file to be linked.

Germano Cavalcante added

Status

Needs Information from User

and removed

Status

Needs Triage

labels 2023-08-03 19:33:18 +02:00

Germano Cavalcante commented

2023-08-14 21:47:32 +02:00

Thanks for the report, but without a .blend file, or clearer steps it's hard to know where to start trying to replicate the problem here.

Unfortunately the scenario described is too time consuming for us to track down, we require the bug reporter to narrow down the problem.

Normally .blend files can be simplified by removing most objects and disabling settings, until the problem reveals itself more clearly.

Thanks for the report, but without a .blend file, or clearer steps it's hard to know where to start trying to replicate the problem here. Unfortunately the scenario described is too time consuming for us to track down, we require the bug reporter to narrow down the problem. Normally .blend files can be simplified by removing most objects and disabling settings, until the problem reveals itself more clearly.

Germano Cavalcante commented

2023-08-23 22:48:34 +02:00

No activity for more than a week. As per the tracker policy we assume the issue is gone and can be closed.

Thanks again for the report. If the problem persists please open a new report with the required information.

No activity for more than a week. As per the tracker policy we assume the issue is gone and can be closed. Thanks again for the report. If the problem persists please open a new report with the required information.

Germano Cavalcante closed this issue

2023-08-23 22:48:36 +02:00

Blender Bot added

Status

Archived

and removed

Status

Needs Information from User

labels 2023-08-23 22:48:38 +02:00

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