Album doesn't load properly on iPod Touch 7th Gen
Sorry that this question is a little long.
I'm accustomed to using an old version of iTunes (version 10) with my iPod Classics, and am now having trouble understanding the new version of iTunes and the iPod Touch 7th Generation. So far I haven't been able to solve the following problem.
I have an mp3 album which I created from scratch years ago, and which I'll just call "Album" here. Until a couple days ago, I had never loaded it onto my current computer (with Win 10 Pro), which is relatively new, nor had I ever imported it into the newest version of iTunes or loaded it on an iPod Touch. It consists of 149 tracks from a various sources. I retagged everything, so all of the tracks have the same album title, are marked as part of a compilation, and have no "album artist" indicated (since with the old iTunes that would have prevented their being grouped together as a single album). I never had any problem with it on the old computer or the iPod Classic on which it was loaded. I've now imported it into the new version of iTunes on my new computer and then loaded it onto the new iPod Touch.
For some reason, 29 of the 149 tracks are listed separately on the iPod, as though they're separate singles. Each is listed separately under what is basically a grayed-out icon, under which appears that track's name, followed by the artist name. All 120 other tracks are listed under a single icon showing "Album's" album art, followed by the name "Album", followed by "Various Artists". (In the mp3's, only the first track in order has any album art; on my older computer and the iPod Classic, each track had it's own album art, based on the original album from which it came, and that never caused a problem; however, I quickly discovered that the new iTunes treats tracks in a chaotic manner if different tracks have different album art, so I deleted the art from everything except the first track before I loaded Album onto the iPod).
I've been unable to figure out anything to distinguish those 29 tracks from the other 120.
*Before* I loaded Album on the iPod, I checked the Sorting tab under "Song info" for each of the tracks, to ensure that the "sort as" under "album" was the same as the album name, and that no album artist was ever listed. After I nevertheless encountered the problem I've described above, I again attached the iPod to the computer, highlighted all of the Album tracks, and then looked under Devices | Music | Get Info. I discovered that under the Sorting tab the "sort as" under the album title said "mixed"; and album artist likewise appeared as "Mixed." Neither should have been the case, since I had specifically addressed that before I transferred Album to the iPod (and in fact had also done it long ago, when I first created Album), but that's what I saw. Therefore, while I had "Get Info" still open, I deleted all the "album artist" info, so it's now all blank, and I conformed all of the "sort as" stuff under the album title, so it's now the same on all tracks. But the problem persists; those 29 tracks still appear separately on the iPod.
I'm stymied. Can anyone give me any advice on how to proceed from here?
Any and all help sincerely appreciated.