In current asterisk template we have following trigger:

<10m
But value returned in asterisk.uptime_reload is always negative, so on reload this trigger is not closed after 10min.
Example of data returned:
{"version":"16.9.0","uptime":7818805.89,"uptime_reload":-1557.11,"active_channels":0,"active_calls":0,

So, to make trigger correct this item should be turned to positive. I've solved that by addind one more preprocessing step to item configuration (after JSONPath)- Custom multiplier -1