Hiya,
Yes, these are all brand new movie imports that MC has never seen before.
No Sidecar files.
The software that moves the files would have had a poster.jpg and a fanart, but not a <filename>.jpg/png/etc
As an example
Directory of Z:\Films\Once Upon a Time in Hollywood (2019)
20/11/2019 15:47 <DIR> .
20/11/2019 15:47 <DIR> ..
08/11/2019 18:31 1,339,980 fanart.jpg
20/11/2019 15:40 3,987,137,176 Once Upon a Time. in Hollywood (2019) WEBDL-720p.mkv
20/11/2019 15:47 1,432 Once Upon a Time. in Hollywood (2019) WEBDL-720p.nfo
22/07/2019 06:28 1,636,080 poster.jpg
That is after MC has imported it, but the auto-import has not downloaded a poster for it.
There were a couple of other films, never previously imported that have done the same as well.
But after selecting the 3 and running get movie & tv....
Directory of Z:\Films\Once Upon a Time in Hollywood (2019)
22/11/2019 06:54 <DIR> .
20/11/2019 15:47 <DIR> ..
08/11/2019 18:31 1,339,980 fanart.jpg
22/11/2019 06:56 1,636,080 Once Upon a Time. in Hollywood (2019) WEBDL-720p.jpg
20/11/2019 15:40 3,987,137,176 Once Upon a Time. in Hollywood (2019) WEBDL-720p.mkv
20/11/2019 15:47 1,432 Once Upon a Time. in Hollywood (2019) WEBDL-720p.nfo
22/07/2019 06:28 1,636,080 poster.jpg
I'm still baffled :-(