Manually adding bank transactions

Hi. I have a business savings account with a bank that does not support direct connection to Quickbooks. Previously I manually added transactions and as a result the savings account doesn't appear on the dashboard which is inconvenient. I know that I can manually import transactions from a properly formatted CSV file and that accounts added in this way should appear on the dashboard. My question is this. If I add new transactions to the business savings account using the CSV method, leaving the previously manually added ones in place, will this cause the account to appear on the dashboard or will I have to delete the manually added ones and then reimport from the start. This option may be complicated as the transactions are all transfers from  another account and deleting one side of the transfer might mess things up.