Yes. If you go back up to my original post, look at #2. It lays it all out pretty clearly, and has been confirmed various other's replies. Using the dropdown to unlock leaves your wallet kind of exposed while staking, but may be convenient if you need to do a series of quick sends. Unlock it old-school (console command) if you just want to stake safely.
When I use the following command:
walletpassphrase WALLETPASSPHRASE 9999999 mintonly
I get the following error:
Error: Error parsing JSON:mintonly
(I substitute my real wallet passphrase for WALLETPASSPHRASE)
mintonly should be TRUE
so
walletpassphrase WALLETPASSPHRASE 9999999 true
