If campaigns are not working one day no data is imported

Hello,

I am experiencing problems when importing Facebook ads data because if for example one day the campaigns have been not working, instead of importing  the data and making it appear as 0 in every metric, it directly doesn't appear so the graphs that I am then "painting" are not "real"

Do you know how can I make the data appear even if one day the campaigns have been not working?

Thank you in advance

Best