Daily usage, missing data


I use emoncms to track energy use.
To create daily values I follow the described method of generating a cumulative feed and appropriate settings in a bar chart to create a daily value.
Yesterday there was a network dropout from 21pm untill 5am.
This results in no daily value for may 26.

Is there a way to resolve this or prevent this from happening?
Why doesn’t the cummulative feed keeps on going with the last send input value?

Kind regards,