I have a model that was imported from an erronous file where each triangle was disconnected from the others. After "reconnecting" it via removing duplicate vertices and exporting (to .ply with vertex paint) I still have some disconnected pieces along the seam of a vertex paint stroke.
How do I connect these faces to the rest of the mesh?
To make it clear: Blender has it fully connected but the exported file does not because vertices are split.
The actual problem boils down to: How do I merge the vertex color of a vertex that has differing colors in its incident faces?
To avoid confusion: The mesh is fully connected inside Blender (if I select one vertex and then "select connected", all vertices/edges/faces are selected) after the "remove duplicates". However in the exported file the mesh is disconnected at the vertex paint stroke boundary.