Metatrader VPS restarts?


On my live charts, running on a Metatrader VPS,  I use a custom indicator which monitors, amongst other things, drawdown and free margin. The indicator sends push alerts at set levels and a test alert when the indicator is reloaded.

This morning I received a test alert for each of my live charts, indicating that they had been reloaded. I never saw this on my previous VPS. Is it some kind of weekend system maintenance that caused the charts to reload?