Tip: Manual bank transaction import, using a 'Quarantine' account.
For everyone freaking out about losing free automated bank connections, a quick tip for manual imports:
In Wave, create a new 'bank' account in your Chart of Accounts. Call it "Quarantine", or whatever other name you prefer.
Go to your bank and export transactions. Quicken / QBO formats are the easiest and most reliable. CSV also works, but slightly more fragile.
Go to Wave, and import the bank data into your Quarantine account
Take a look at the Quarantine account, and the account where the transactions really belong - let's assume "Checking". Notice the 'boundary' where new transactions start. Let's say it's May 4th.
In you Quarantine account, select all transactions after May 4th. You can multi-select the individual transactions, or filter and then 'Select all'
Do a Bulk Edit, and edit the 'Account' from Quarantine to Checking (in this case).
Bulk select the rest of the transactions in your Quarantine account, and delete them.
Done. Simple, repeatable steps. No risk of duplicated or missed transactions.
Of course, if your bank is smart enough to offer an export option 'Since my last export', you don't need to do this - you can just import straight to the final target account.
If you have checking and credit card accounts, you may want to create a separate 'Quarantine' account of each type.
HTH