All About Lightning Electrum
It's important to transfer the BTC from your original Electrum wallet (to a new Electrum wallet, a new wallet generated by a new monemone, and back it up), which is important to prevent possible BTC loss.
The new desktop version is electron-based and offers Windows, macOS desktop installers, and Linux RPM and Debian packages, with model files stored on the local file system.
According to a May 7 post on the company's website, the migration is due to BitGo Wallet, which provides greater convenience and 2000 security. The old Electrum-LTC wallet address will continue to be used next month, and the new BitGo wallet will be available soon.
You may have noticed an important difference between the MyMonero type and the Electrum seed type. MyMonero creates a viewing private key by hashing a random integer, while the Electrum type hash pays the private key. This means that the seeds of 13 and 25 words are not compatible - it is not possible to create an Electrum type account that matches the MyMonero type account (and vice versa) because viewing key pairs is always different.
It's not hard to run your own Electrum server and point your wallet to just use it. This restores Electrum to the point where it has the same privacy and security attributes as the full node, where no one else can see the address or transaction that the wallet is interested in. Electrum then becomes an all-node wallet.