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I have a question regarding transition to HD wallets in Electrum
What user experience is going to look like? Say in 3 years from now your user is downloading Electrum client and tries to enter Electrum 1.9 seed in it.

What would happen?

When is the planed cut-off date? I.e. you would probably have "New" and "Old" versions of Electrum published on your website for a while along with instructions for non tech savvy. How long is that "while" going to be?
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