Hello.
I migrate from dude 3.6 to last version dude on CHR at Virtualbox.
So i run VM, after install dude server, then Independently i import old scheme or paint new, my graph stopped (link load or ping device) after ~25sec. After restart RouterOS i again seen 25 sec of graph.
What i did wrong ?
I’m not sure I understand what’s happening at 25 seconds, but under Settings > Chart, what is your Raw Value Keep Time?
Chart value is default settings.
I start to redraw scheme (with correct time, because when i change time or zone when scheme complete, graph not drawing again)
Import from old (3.6 xml) version not correct 
all link not draw graph
May close thread.