This problem did not occur in 4.27.0.


Animation is not output when outputting a hierarchical structure.


This is how the attachments are registered, and the key is placed in the Transform Track of each ABC.

Animation is output for both ABCs

AB's Animation is not output, only C's Animation is output

Steps to Reproduce
  1. Add two arbitrary actors as Spawnable to a new sequencer.
  2. Add a Key to the TransformTrack of Actor (A).
  3. Attach Actor (B) to Actor (A) using AttachTrack.
  4. Select Actor (A), perform export operation on the sequencer (opiton is default), and output fbx(ascii).
  5. Load the fbx in the DCC tool and make sure there is no animation.

Have Comments or More Details?

There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-134900 in the post.

Login to Vote

ComponentUE - Anim - Sequencer
Affects Versions4.27.1
Target Fix4.27.2
Fix Commit18310727
Main Commit18486089
CreatedNov 15, 2021
ResolvedNov 29, 2021
UpdatedJan 7, 2022