Which path format do you have to use for the -exportdir option (or any option that accepts a path) on Windows? There is no documentation for it. The default Windows path format doesn’t work, e.g. adding a line like this to zcash.conf:
exportdir='C:\Users\User\AppData\Roaming\Zcash'
Then zcash-wallet-tool.exe complains about the syntax. So what’s the path syntax on Windows?