Request for UE 4.19 DynamicVertexData Update Notes

Hi, I did ask this in the reply to the 4.19 forum update post, but it may have got lost in there:

It seems there has been significant changes to how DynamicVertexData is handled in FMeshBatch (ie that path has been removed). A few places in the code have been changed to use FDynamicMeshBuilder instead, but this seems less then optimal to me.

Could I please request some update notes for code that was previously using DynamicVertexData as this is a breaking change for our project that I cant seem to find any info or upgrade path docs on.