Assuming the same seed words are used, then the differences between wallets are caused by the selections that are made when generating the wallet... that is to say:
- Selecting "Legacy" or "Segwit"
- Modifying the deriviation path
- "extending the seed with custom words"
- Selecting "Legacy" or "Segwit"
- Modifying the deriviation path
- "extending the seed with custom words"
- it is Legacy. I have alwaysed used & recovered in Legacy
- Absolutely certain: I did not modify derivation path
- Absolutely certain: I did not extend the seed with custom words
Now... I would say that one of the following are the likely causes for this whole scenario (in order of probability):
1. Accidentally using a secondary/different wallet that wasn't created using the seed you wrote down
2. Accidental modification of derivation path during initial wallet creation
3. Seeds mixed up during wallet creation
4. "forgotten" Seed Extension
5. Some hitherto unknown bug in Electrum
1. Accidentally using a secondary/different wallet that wasn't created using the seed you wrote down
2. Accidental modification of derivation path during initial wallet creation
3. Seeds mixed up during wallet creation
4. "forgotten" Seed Extension
5. Some hitherto unknown bug in Electrum
1. Absolutely NOT. I have used that wallet generated with that seed. - Besides that I have mentioned that I did recover the "lost" wallet before I did the update on Electrum software.
2. NO.
3. NO.
4. NO.
5. Well.... in my previous topic in Spt. 2019 I wrote that the wallet was affected by a 'file corruption bug'.
Why did I write it? Because I found this information either on Tails,- or Electrum website, thus at that point it seemed to me that was it, due to descriptions on the website.
If you want to experiment with #2, the derivation path theory, then I would recommend downloading and running this tool offline: https://github.com/FarCanary/ElectrumSeedTester
It's basically a modified version of IanColeman's BIP39 tool that works with Electrum seeds. It also allows you to put in "custom seed extensions" (ie. a BIP39 passphrase but for Electrum seeds)
It's basically a modified version of IanColeman's BIP39 tool that works with Electrum seeds. It also allows you to put in "custom seed extensions" (ie. a BIP39 passphrase but for Electrum seeds)
Now this..... this is something Great! & I've been jerking on it for over half of the day
..... didn't go nowhere, until now at least
Here is the thing:
>>>> look at the picture @bitmover hosted, with 2 wallets
The wallet from the left side - find straight away, without any problems or changing anything in the tool.
The wallet from the right side - I am incapable of digging it out. Tried each Master Node, many different accounts, wallet chains & addresses - I can not find it.
Any tip on that?
Keep in Mind the both wallets were generated using the same seed.
I guess at this point, the derivation path is your best hope, so give the modified seed tool a go...
I guess too.
but I would caution that you don't raise your hopes too high... the chances of this being the cause of all this are probably slim to none 
I have somehow this feeling that it has something to do with my problem & might be also file corruption bug (mentioned in topic in Spt. 2019) [/quote]