When you render out a movie from a Matinee, the painted Vertex Colors on a Blueprint does not render, the meshes in the Blueprint revert to imported vertex color.
Also Reproduced in 4.8.0 and Main Promotable-CL-2581018
Screenshot from Editor:
Screenshot from Rendered Matinee:
Quick Repro open the VertexColorMatinee Project attached above
RESULTS: In Editor Vertex Color painting is not rendered in Movie
EXPECTED: In Editor Vertex Color painting is rendered in Movie
Head over to the existing Questions & Answers thread and let us know what's up.