How do I import data from Wells Fargo into a specific account in Quicken Premier

@Tim McBrayer As you've seen, with an account connected to a financial institution for downloading, a blue dot appears in the Status column for all downloaded transactions. (You might also see an orange pencil if you manually enter a transaction in a connected account; the pencil will turn blue if the transaction was manually entered and matched with a downloaded transaction.)

Short answer: Enter/Return in Quicken Mac opens a transaction for editing, which is why it can't be used to clear the status. Instead, use Option-R (for "reviewed") followed by down arrow.

More detailed answer: After you've reviewed some or all downloaded transactions, there are several ways to mark them as reviewed.

One-by-one: After you review at each transaction, click on the blue icon and select Mark as Reviewed from the pop-up menu. The key command for this is Option-R. (To reverse this if you click on by mistake, Shift-Option-R restores the blue dot.) 

All at once: If you have reviewed all of the newly downloaded transactions and want to mark all of them reviewed at once, click on the blue icon and select Mark All Reviewed from the pop-up menu.

Selectively: To clear multiple transactions of your choosing, select all the transactions you want to clear. This followed standard Mac conventions for selecting multiple items:

• If there are a contiguous block of them, click on the first, and Shift-click on the last; they'll all become highlighted.
• Select individual transactions independently by Command-clicking on each one you want; each one you Command-click will add to the transactions highlighted.

Once you have the transactions selected you want to mark as cleared, Control-Click on any selected transaction and select Set Status of Selected Transactions to > Reviewed from the pop-up menu -- or just use the Option-R shortcut.