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previous deleted collections are still in the file on import
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Description

Operating system: Linuxmint 19.0
Graphics card:Geforce GTX1050

Blender Version
81ea815dcb6, 2018-12-12

The attached file actually has 3 collections. There were a lot more, but I deleted them.

When creating a new file and import a collection out of the attached file, there are all old, deleted collections visible.

I think "deleting" collections are not working 100%

Details

Type
Bug

Event Timeline

Jacques Lucke (JacquesLucke) triaged this task as Needs Information from User priority.Dec 19 2018, 12:02 PM

Before creating bug reports please check if the problem still persists in the newest version (yours is already a week old).

Also can you reproduce the issue with a new file?

Brecht Van Lommel (brecht) claimed this task.

Blender does not immediately delete unused datablocks, so these collections stick around until you open and save the original file again.
https://docs.blender.org/manual/en/latest/data_system/data_blocks.html#users-garbage-collection

This is somewhat confusing and may change some day, but for now it's not a bug.