Copied and Pasted tracks do not persist between editor session in UMG Sequencer
Outside of //UE4/Dev-Sequencer this will result in a crash: [Link Removed]
Result:
Second button is missing Transform section & key data
Expected:
Second button as Transform section & key data
There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-69644 in the post.