You might have duplicate Form 1099-DIVs

I am entering 1099-DIV information manually for both TD Ameritrade and Charles Schwab.  I am getting this message - 

"You might have duplicate Form 1099-DIVs. These forms have the same or similar information. Review the forms and delete duplicates to avoid filing errors."
 
Then it gives me an option to Delete Form 1 or Form 2 or Keep both the forms.
 
Why am I getting that message even though dividend amount is different on each form? My accounts were converted from TD Ameritrade to Charles Schwab some time last year.