Originally Posted by enkamania
To get rid of the sparge in BeerSmith, click on the full boil mash (BIAB) checkbox on the design page.
I'm having this same problem but I didn't see a checkbox for this on the design page. It's not there by default, you need to add it. In the lower right section of the design page, click the "select fields" and pick "full boil mash (BIAB)" and click save.
Also, don't forget to change your mash profile to BIAB or you'll get an error on the Mashout step