Because those private keys are not covered by a backup of the wallet's seed.
In the old versions when a similar feature was possible: Some newbies who imported their unrelated key(s) to an HD wallet reported missing funds for not backing up the imported keys after losing access to the wallet, thinking that they can restore it with the wallet's seed phrase.
I just tested it on the Electrum for mobile and it worked. You need to click on "create wallet" from the Wallets menu. chooe a wallet name then choose "import Bitcoin addresses or private keys", then you can copy-paste the private key(s).
Yeah I was under no illusions that the new seed would cover the imported addresses private keys... so I was just going to keep the wallet file properly accessible from a central location from now on (rather than just recreating it using the seed, if I re-install the PC).
The fact Electrum Mobile can do it is really odd... either neither should or the Electrum Desktop is missing the feature?
once you imported these public addresses the label won't sync except the transaction history. The server for labelsync won't recognise it because it doesn't have the Master Public Key.
They use MPK function as wallet_ID without the MPK how the server would determine if the wallet is sending different MPK?
They use MPK function as wallet_ID without the MPK how the server would determine if the wallet is sending different MPK?
Makes sense.
I don't know if exporting the labels locally and import it once you created a watch-only wallet would work but I think this one can't force to upload if you import only a public or BTC address like I said it would created a new watch-only wallet unless if you imported master public key.
specifically...
unless if you imported master public key.
Oh now there is an idea!
So perhaps a single wallet file that supports multiple seeds (either 'old', 'standard', or BIP39)... thus multiple MPK's within one wallet file... that would provide everything I'm hoping for? Sort of a "New wallet & merge old wallet" option?
I guess another way would be to put your current wallet file, along with any other wallets you consider to be historically linked... in the same directory - and have all the wallets from that directory as one window.
By that I mean... the 'History' tab would show transactions from multiple wallets merged together? This would only makes sense for wallets that have been "closed" (whatever that means) with a zero balance... else the History window wouldn't make much sense for a running total.
Basically... any method of getting some continuity from the old wallet to the new for seeing all the transaction history at once, would be nice
Just not sure how to get there.