I hope someone can kindly advise me and anyone else reading it what is the best thing to do in such a scenario.

After buying a new PC (Windows 11), I set up Electrum once again after going through all the correct procedures.

On my old PC, I had my coins stored in a default wallet. So what I did was set up a new wallet on my new PC (this time I gave it a name) and imported the seed (if that is the correct, phrase). So I typed in my sixteen words and the coins appeared in this new wallet.

I now have the novelty that I can see them on both the old PC in the old default wallet and the new PC in my named wallet.

I plan to eventually move my coins to a Trezor wallet. But is there any way I can disable the old default wallet in my old PC, before I get rid of the old PC entirely?