With the new version, the maximum alcohol tolerance of the yeast used becomes the maximum allowable ABV.
I recommend the following:
1. Make sure that the specifications for the yeast are updated based upon the manufacturer's data sheet. In many cases, the manufacturer has updated the published specs and this only gets into BeerSmith when some one takes the time to update the ingredient lists.
2. If this still does not fit your desired endpoint, then increase the maximum alcohol tolerance for the yeast you are using to a point above what you think you will accomplish.
3. Note that when you brew and ferment, if you find that you stall out at a given ABV, you can later go back and edit the yeast strain to reflect your actual findings/records.