Please provide more detail about What you exchanged, for What, and When related events happened. Unless it was an exchange of real estate, 8824 probably doesn't apply on a 2018 or 2019 return. See https://www.irs.gov/forms-pubs/about-form-8824
How did you enter the like-kind exchange?
To enter your like-kind exchange using TurboTax Online follow the steps in the link.
If you are using the desktop version and seeing something odd, it may be due to forms not being totally updated for 2019 since many forms are not finalized by the IRS or in TurboTax. Please update your TurboTax Desktop program. You may not see a change until sometime in January if it is a form issue.
The FAQ posted will not work with the current release of the 2019 online editions using the Search function.
For the TurboTax online editions -
Click on Tax Tools on the left side of the screen
Click on Tools
Click on Topic Search
Type in like kind. With like kind highlighted click on GO.
For the TurboTax desktop CD/Download editions -
Enter like kind in the Search box located in the upper right of the program screen. Click on Jump to like kind