Some graphs with shorter date ranges than others

[oliverhowe]

Some of my graphs are showing only the last 7 days whereas some other ones for the same hosts go back over a year.

I replaced the https cert last week when the old one expired, could that be the cause?

Otherwise if there is some bad data maybe in one of the db tables could that stop Zabbix from showing earlier data? Which table do I need to look in?

thanks,

Oliver