Config 5min - external Link and there it is default 15min?

Grafana Configuration
1

Hello,
I would like to see the grafana graph inside the vis of ioBroker. I setup the Grafana Graph to 5min 5s, save, link, copy.
I insert the link to vis editor, start the vis new and see 15min Intervall ?
Why?
THX

2

Think I found it, saving the dashboard needs the option “save time as default” activated.