>>>Alejandro,
>>
>>(snip)
>>> Better to recalculate than to have an incorrect number.
>>
>>Amen to better slow than wrong. I believe we can avoid that kind of errors in this case.
>>
>
>I say recalculate and do not store the summary values... when you have to manually adjust the records (for whatever reason) will you always remember to adjust the summary values?

Wayne,

I appreciate your comments and your point. Thank you.

Alex