Vertex Group Missing When opening blend file saved in 3.0, on a lower blender version #90746

New Issue

Franklyn Afeso · 2021-08-18T09:59:38+02:00

Franklyn Afeso commented

2021-08-18 09:59:38 +02:00

System Information
Operating system: Windows-10-10.0.19041-SP0 64 Bits
Graphics card: Intel(R) UHD Graphics Intel 4.5.0 - Build 27.20.100.8681

Blender Version
Broken: version: 2.93.2, branch: master, commit date: 2021-08-03 05:58, hash: 1eb06de260
Worked: None So far

Short description of error
Save a file in 3.0, open saved file in an older blender version (2.83 and below),
all vertex groups are missing.

Exact steps for others to reproduce the error

open a 2.83 file in 3.0
save file in 3.0
re open file in 2.83, and the vertex group are missing.

**System Information** Operating system: Windows-10-10.0.19041-SP0 64 Bits Graphics card: Intel(R) UHD Graphics Intel 4.5.0 - Build 27.20.100.8681 **Blender Version** Broken: version: 2.93.2, branch: master, commit date: 2021-08-03 05:58, hash: `1eb06de260` Worked: None So far **Short description of error** Save a file in 3.0, open saved file in an older blender version (2.83 and below), all vertex groups are missing. **Exact steps for others to reproduce the error** - open a 2.83 file in 3.0 - save file in 3.0 - re open file in 2.83, and the vertex group are missing.

Franklyn Afeso commented

2021-08-18 09:59:38 +02:00

Added subscriber: @afeso

Pratik Borhade commented

2021-08-18 10:29:12 +02:00

Added subscriber: @PratikPB2123

Pratik Borhade commented

2021-08-18 10:29:12 +02:00

Can confirm. Possibly caused by the commit 3b6ee8cee7

Guess this is expected because message will be displayed after opening the file in older versions: File written by newer Blender binary (300.11), expect loss of data!

Can confirm. Possibly caused by the commit 3b6ee8cee7 Guess this is expected because message will be displayed after opening the file in older versions: `File written by newer Blender binary (300.11), expect loss of data!`

Pratik Borhade commented

2021-08-18 10:35:08 +02:00

Similar issues has been reported before:

#89870 (Vertex groups are lost if I save a file in 3.0 and open in 2.92 without warnings)
#90441 (File that was saved in 3.0 and after opened in 2.93.X will lose his vertex group data)

Looking at the ISS's comment from #90441 I think the current behavior is expected. (Report can be closed I guess but will wait for others to check this)

Similar issues has been reported before: - #89870 (Vertex groups are lost if I save a file in 3.0 and open in 2.92 without warnings) - #90441 (File that was saved in 3.0 and after opened in 2.93.X will lose his vertex group data) Looking at the ISS's comment from `#90441` I think the current behavior is expected. (Report can be closed I guess but will wait for others to check this)

Franklyn Afeso commented

2021-08-18 11:47:18 +02:00

Is there a way to get this back, cos even linking or appending the collection doesn't bring vertex groups

Henrik D. commented

2021-08-18 12:41:37 +02:00

Added subscriber: @HDMaster84

Henrik D. commented

2021-08-18 12:41:37 +02:00

remember 3.0 is not meant for production yet, there are warning banners for a reason. As a workaround you could export your model in 3.0 and import it in 2.93 using some fileformat which captures vertex groups data.

Franklyn Afeso commented

2021-08-18 15:57:15 +02:00

Ah Thanks.

I was testing it out, but mistakenly saved over my most recent update, and so far, it isn't nearly as stable, so I've been looking for a way to bring over my changes into 2.93.

Ah Thanks. I was testing it out, but mistakenly saved over my most recent update, and so far, it isn't nearly as stable, so I've been looking for a way to bring over my changes into 2.93.

Philipp Oeser commented

2021-08-23 15:17:49 +02:00

Added subscriber: @lichtwerk