Stick with the original account, or:
Stick with the new account.
Hope this helps!
There you go. The original account is long forgotten (wasn’t mine)
Your standard MP3 player will allow you to copy and move files from one player to the next all day long. Not so with the Ipod.
This might be due to the licensing agreement between RIAA and Apple since it would make easy to clone the music.
It is a bit of a pain in the rear and it would be really nice to be able to “transfer” the songs on an old device to a new device without involving Itunes. Especially third party MP3 songs that were converted from a CD, etc. which are also on the older Ipod.
Also, important to note: Apple may not have a complete list of previously purchased songs even if the user was able to find the original email/account name.
And early on, Apple used account names versus emails as the customer id. A few years ago, Apple required everyone to change their user id to an email. So the original id may be a name or it could be an email.
I have personally experienced all of the above and it can be a bit frustrating.
Stick with the new account.
Hope this helps!”
All true. We have had 5 or 6 different computers with our iPod/iTunes account.
You can preserve both libraries, if you have two accounts.
Steps:
1) Log into the original iTunes account
2) Authorize your computer as an additional authorized computer. You can have up to 5.
3) Restore your library from the iCloud. If you can't you may have to call Apple support to get it done.
4) Sync with your iPod.
5) Share with another account, your other iTunes account. If you can't do this on your same computer (I've never tried that) get another computer on your network with that account and share the tunes.
This is all described somewhere in iTunes, but this is my distilled experience of 10+ years with an iPod.