Hello woofer2425,
Thank you for using Apple Support Communities. We also appreciate you sharing these additional details with us. We’d like to help out and recommend some steps to see if we can get your emails to properly appear after you move them. First, try the following basic steps below. This should help refresh things:
1.) Close the mail app following these steps: Quit apps on Mac - Apple Support
2.) Shut down or restart your Mac - Apple Support
Test to see if that helps out. If you notice that this unique issue continues to occur. Try starting up in safe mode. This step can help isolate possible software related issues: How to use safe mode on your Mac - Apple Support
Intel processor
1.) Turn on or restart your Mac, then immediately press and hold the Shift key as your Mac starts up.
2.) Release the key when you see the login window, then log in to your Mac.
3.) You might be asked to log in again. On either the first or second login window, you should see ”Safe Boot” in the upper-right corner of the window.
Depending on your results, follow the steps under “If the issue continues in safe mode” or “If the issue doesn't continue in safe mode”.
Feel free to keep us updated on your results. Thank you for using Apple Support Communities. Cheers.