Sapling migration tool
This release of ZecWallet updates the embedded zcashd to 2.0.5-2, and adds support for the native Sprout -> Sapling migration tool.
Go to Apps -> Sapling Turnstile
and simply check the box to enable Sprout -> Sapling migration. Your Sprout funds will slowly move to your Sapling Addresses every 500 blocks. Please see the zcashd blog post for more details