Issue: Ghost page counts in (imported) areas after moving contents to other areas?

I'm now at the point that VaultWiki's public release is imminent, with the final import done and the next step turning the Wiki on in the admin settings.

To provide context, the MediaWiki -> VaultWiki importer places the content into Main, File and Template areas initially which is fine. However, after the import I have moved these hundreds of pages/files/templates to other areas - a tedious task with the volume of content brought across but one that only needs to be done once so I can't complain . Anyway this isn't the issue.

The issue is VaultWiki is reporting that the Main, File and Template areas still contain wiki pages even though I have moved them all elsewhere. For instance, the area "File (imported)" is reported as having 419/424 pages/content nodes. I thought perhaps that the counters just needed to be rebuilt. This however did not fix the mystery pages number. I checked the table "vw_page" for any rows with an areaid of 37, where 37 is the id of area "File (imported)", and the only result is the area itself.

My plan was at this stage to delete the three areas created during import as they are no longer needed, assuming that they really are empty of course! Out of fear of losing valuable content I haven't deleted the imported areas.

I'll attach a picture which may help with the explanation.

Thanks