I'm pretty sure you need to cancel the original visa (I think you're on an ED ) if you have plans to stay in thailand long term later on. My buddy was in a similar situation as you, canceled his visa last week at CW and is in Lao now for a month. I'm not sure why you would transfer an expired visa to a new passport though.
Seems you've been in thailand for a good year or so on covid extensions, tourist visas and/or visa exemptions. You probably should look into a more long term visa option or go back to the states for a few months.