Missing Texture Paths

When I open a previous Rhino 5 version with textures in Rhino 6, the texture search and paths do not load automatically like it does in Rhino 5! Rhino 6 gives me the missing textures dialog box!. Textures were not moved from original location. I am using RH6 SR6.

I am hoping this is some default checklist that just got disabled or a minor bug. We have literally thousands of 3D asset files with associated textures (used in both production and visualization) which we need to load automatically when Rhino 6 opens. Hope someone can help.