C1 Pro 9.1 "Import" tool not showing ratings or other flags?

I've been using C1 more seriously since version 7 and have followed all upgrades since (love this programme). I only used "Sessions" up to now, in a weird way that actually mimicked my previous workflow. I don't have individual sessions for each job or set of images, I used one Session that selects images using the Library tool, and outputs processed images into sub-folders in the location of the original images. I now have a very extensive library of uncatalogued, processed images set up in this mode.

Now I want to use Catalogs, and have started imported selected images from my past shoots into various Catalogs for specific purposes.

However, when using the Import tool, the thumbnails shown in the window from a selected folder are visible as such, but no star ratings, colour flags or preview of processed images are shown - only the "raw" raw (if you know what I mean) without embellishments. This makes is difficult to identify which images I had previously tagged and processed, for import into my new catalogue. The "Include Existing Adjustments" flag is set.

Is it me being a dunce, or is this an application aspect I'm not understanding properly? Any ideas / suggestions?

(I could post a screen grab, if it'll help).

Cheers,
Alun.