FYI - I'm a n00b - I don't know much about NEM but was given some a few years ago.
So I got a NEW wallet a few years ago when my buddy gave me some NEM. I never did anything with them but could log into my wallet to verify I had them.
Looks like NEM upgraded the technology? SO when I try and login now it said I had to import my wallet. found the file still on my PC and picked that. It shows up as Mijin undefined. When I try and login, it says:
Selected wallet needs an upgrade. This action will generate a child public key and add it into your main account. Download of updated wallet will be automatically triggered at success, you must download it !
So I hit "upgrade wallet" and then it tells me:
"Unknown wallet encryption method"
SO, I created a new wallet which shows as Mainnet with my username. I can login to this new accout so I thought maybe there is a way to transfer my NEM from my old account?
I know my old account address and my new account address.