BOX B Non covered What Next

I bought and sold shares in I Shares SLV this year.  Turbo Tax has designated it as BOX B (Short term Non-covered).  There are small proceeds every month on this Trust because the company sells some SLV to cover expenses.  No Cost Basis is entered for these.  Once I figure out the cost basis and enter into Turbo Tax Do I change to BOX A (Covered)?