Hey, everyone, I have found an alternative to comfortably_nick's suggestion. I'm sure there are many like myself who are on a Mac, and therfore dbPoweramp isn't an option to pull off nick's trick.
I did find an alternative though that's working great: I found that can have sort-of a "hybrid" set up combining iTunes Match with uploading to the iPhone. I *think* that in iOS 5, when you turned on Match it would replace your catalog with the Match service. Anything you had loaded would be dumped. I could be wrong about that, but if memory serves me well, that's the way it worked.
Now, in iOS 6, what you have uploaded to your iPhone does NOT get dumped when you turn Match on. Through various testing, this is what I found, and this is how I'm able to upload remastered songs, etc. to the iPhone and still use iTunes Match for everything else that doesn't give me mismatching problems:
1. Turn iTunes Match OFF on the iPhone. This will allow your iPhone's music to be controlled by iTunes when you are syncing the iPhone. Be sure and tell iTunes to only sync albums, genres, artist, etc. that you want to upload, and not your entire library.
2. Go into your library on your computer (with the iPhone attached), and tell iTunes to sync to the iPhone whatever albums are giving you trouble. In the case of this thread, check the Beatles catalog. Obviously, this will work for any albums from any artist that you have loaded.
3. Sync the iPhone. iTunes will upload anything you have checked to the iPhone.
Here is the part I discovered by accident that has solved most of my problems:
4. Go back into the iPhone and turn the Match service back to ON, then let your iPhone load up all the Match information. It will display the iCloud icon on the screen and have a progress bar shown if you have the Music app launched.
That's it. Now, you have access to all of your music through Match, BUT anything that was previously synced to the phone will still be there, and will NOT be overwritten/dumped by Match. For example, now all your Beatles music that you uploaded will be there, but Music uses the files on your iPhone and doesn't stream what's "matched" on Apple's servers.
The main drawback is that anything you upload to the iPhone takes up HD space. That's a big drawback for me since I have the 16GB model, but it's worth it. I can play specific albums now and not have to put up with mismatching.
What's good though is that you can add albums/songs over time by simply repeating the process. If you find another album that mismatches, you can turn OFF the Match service on the phone, check off the additional album, sync, then turn Match back on, and you'll have a copy on your phone that plays properly.
……….
Until Apple wakes up and fixes the mismatching issue (whether by introducing a "force upload" or allowing users to chose what to match to), my suggestion or Nick's suggestion will have to do.
Hopefully this helps Mac users with the same problems I have.