I am trying to export the opportunity activity report for a rep including any notes created/edited by him on a particular day. I am using "Last activity time" to filter my data for a particular date. But, I am getting multiple rows containing same opportunity but different notes including notes that were created months ago. 

I want only the notes created/edited on a particular day. But I don't want to exclude the rows where there are no notes.

Is there a way around for this ?

Thanks