+ AA6YQ comments below
Given I do not know which qsl have been changed by my niece, I do not know from which date she 'submitted' from
I assume that it was qso dated after Jan 1st.
The ask is to create an sql (spell check change that to sal in previous email) to reset the indicator back to not submitted. ( I assume that is an 'N') from any qso that were logged Jan 1 2020 and afterwards
+ Do you have a log backup that you can restore?