You may need to delete that 1099-R and re-enter it.
Type '1099-R' in the Search area, then 'Jump to 1099-R'.
At the 1099-R Summary Page, Delete the stuck entry.
If you're in TurboTax Online, after this you may want to close the program, clear your Cache and Cookies, and re-enter the 1099-R.
Here's more info on How to Enter 1099-R.
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