Fred58,
As the rounding results in a smaller capital gain than what keeping the cents would have given, just relax, you've saved some tax. There's no penalty for using the pennies vs. the dollars to save some tax. I do that every year to save a couple of bucks. TurboTax has handled the values consistently, including transferring the dollar totals to Schedule D.
As to the exceptions, which aren't advantageous for your current situation, Exception 1 is taken care of by TurboTax. Exception 2 arises only if you manually opt to provide sums of transactions as a single entry. In that case, you may be asked to fill out and mail in Form 8453 if you cannot upload the statements with the details of what would have appeared on 8949 for those composited entries.
