Unreal Engine Issues

Skeleton retarget settings are lost when importing/reimporting a mesh with bone hierarchy changes

Importing a mesh that changes the hierarchy of a related skeleton causes the animation retarget settings on the skeleton to be lost. This is because in UInterchangeSkeletalMeshFactory::EndImportAss ...

When exporting static meshes with bExportSourceMesh enabled, there is a problem where all UVs are fragmented.

From customer: "In the StaticMesh Export option, when bExportSourceMesh is set to True, exporting StaticMesh Assets and importing them into DDC tools such as 3dsMax or Maya results in the UVs being ...

FBX reimport issue with Interchange Framework

A licensee has reported that the following repro steps can result in a "Failed to merge bones" error:One of our Skeletal Mesh assets was imported into engine version 5.4 using an older version of th ...

Importing FBX that contains a socket from Blender to Unreal, the socket gets rotated by 90° and is scaled by 100

Context: Sockets are attach points that can be placed on a Static Mesh to attach an object to the static mesh. Problem: Importing an FBX that contains a socket from Blender to Unreal, the socket ge ...

[Interchange] No data imported when trying to import animation only on a previously imported skeleton.

Interchange framework is bypassed on the second attempt after a failed import

Hello! We have encountered a bug with the Interchange pipeline. When an interchange texture import is cancelled due to non-power of 2, and then the same texture is imported again without any change ...

UAsset file size - fbx embedded textures

hello! was curious if there were any settings I could adjust in Unreal to reduce the size of uassets generated from fbx files with embedded textures? i've recently swapped to using fbx exports from ...

Interchange Framework - Missing References on Animation Import with Python Pipelines

Hello, I'm using Interchange in a UE5.5.4 project with my Pipeline Stack containing a copy of the DefaultAssetPipeline and a custom Python Pipeline. When importing my Animation with only the Defau ...

Interchange Runtime .glb Import Crash When Packaged

The runtime import process works fine in editor, but fatal error when trying to do so with packaged build of project. My function that calls ImportAsset():bool UMeshLoader::RequestMeshLoad(FString ...

Reimporting an asset during PIE overwrites the bAllowCPUAccess value to true

When reimporting a static mesh asset before PIE execution, the value of bAllowCPUAccess is false.  If reimporting a static mesh asset while PIE is running, the value of bAllowCPUAccess is true. In a ...