Unexpected behavior w/ Preserve UV tile layout

I've followed the simple instructions for working with UDIMs supporting painting across tiles, enabled Preserve UV tile layout when importing mesh and seven textures in a new project, all seven tiles show up in the project and map correctly to the mesh, alas each tile split into a separate Texture Set, not grouped as in the video tut. I'm attaching a log file and screen capture, thanks for a quick response. I'm in a trial version, considering moving from Mari to Substance Painter, but need to validate a workflow. Big thanks.