OK I managed to move my PHS QT/wallet from Windows to Linux now.
In case someone faces the same challenge starting with Linux, here is what I had to do:
- Launch the wallet in windows, go to the console, and run the command
- dumpprivkey
- Do this for every PHS address in the wallet and copy the private key somewhere
- Install Linux QT and sync the blockchain, go to the console, and run the command
- importprivkey
- Do this for every PHS private key
- Then go to file (main QT window), backup wallet
- For some reason the wallet was saved in the QT folder, not the .Philosopherstone one
- Name the backup wallet.dat and move to .Philosopherstone hidden folder (needs admin permission)
That's it! Enjoy the staking

Thanks Sorros, if using Qt you can just export wallet to send all keys to a text file. for pasting or paper.
Not recommended for inexperienced users as you can easily lose your balance if not secured.In other news, Keeping an eye on the world economy and disturbances, maybe another crytpo rally is in order.
