I am in a similar situation - I have 100,000 NOBL from a while ago, and I just saw on Twitter yesterday that everything moved to POS (I've been out of the loop!).
My existing POW wallet is encrypted, so I tried the method of sending the balance to a new (unencrypted) wallet address, using the old POW client.
This seemed to work - here is the receiving address in the block explorer:
https://chainz.cryptoid.info/nobl/address.dws?9Y8c7jZWyYgzKbnV94KmMDVErobyGphuKh.htmHowever, when I start up the new wallet - either in the old client, or in the new client using -salvagewallet after copying the unencrypted POW wallet to Appdata\Roaming\NoblecoinPOS - I don't see the 100K balance.
Does anyone have any ideas for me? Thanks!
Myeagleflies will hopefully clarify, but to me this would not work as what happened was there was a snapshot taken and all of the coins distributed onto the new bockchain as they were in the old one. So you transferred them after the copy back, the coins won't be there.
Will it not work with the unlockwallet command? I can't remember what it was offhand.
Thanks for the reply james!
The OP states that there isn't a way to unencrypt a wallet once it's encrypted:
If your wallet is encrypted things become more complex as there is no way to remove encryption AFAIK. You have two options:
create new un-encrypted PoW wallet and transfer your funds there. then you will be able to follow -salvagewallet method to move the keys into PoS wallet
send money to an exchange - 2.1. method
At this point, it doesn't matter, since I sent my coins from the encrypted one, and I can't get them back unless I can see them in my new address (in my unencrypted wallet). What you explained about the timing of the snapshot makes sense, but I was just being hopeful based on eagleflies's comment:
2. It is too late to convert coins via exchange. But you can do it by yourself too without any time limit.
Is it true that there isn't a time limit? I also tried importing the receiving address private key into the POS wallet, but that didn't give me my balance either.
Thanks again!
Let me know if my understanding is correct:
1. you had encrypted wallet with balance of 100 000 in it
2. after switch you generated new receival address on PoW network (or PoS network?) and sent there money from old wallet
3. you can see this transaction on blockchain but you do not see it in your unencrypted wallet
Is your original encrypted wallet empty at this point?
I would suggest you to take a look at manual method.
https://github.com/eagleflies/noblecoin/wiki/Manual-way-of-importing-private-keysHowever since your encrypted wallet is empty now, is it? command used in this method 'listunspent' is not going to help since you spent money already.
What you need to run is:
listreceivedbyaddress 1 true
This will produce list of all addresses you used on this wallet. For each address you need to run
dumpprivkey ...
Then you need to import those private keys into PoS wallet as described there
https://github.com/eagleflies/noblecoin/wiki/Manual-way-of-importing-private-keysWhatever you do:
Backup old wallet. It stores keys to your money. No time limit. As far as your original wallet is backed up somewhere you can try and fail 100 times and still be able to suceed when you try later 
