Wrong Results flux query funciton difference()

i have a problem with the results of my flux query using the flux-funciton difference. When i selcect data from the whole year it returns wrong results at first of march (minus values) and doubles the values at the first of november. I have checked my data in influx db, the data are correct and there are no wrong entries in the db. The result are only wrong when both first of march and first of november are in the time range. Whe i use a time range where only first of march or first of november ist in the time range, the result is correct

import “timezone” option location = timezone.location(name: “America/Los_Angeles”)
from(bucket: “${BucketInflux}”)

|> range(start: ${__from:date}, stop: ${__to:date})
|> drop(columns: [“host”, “year”, “month”])
|> filter(fn: (r) => r._measurement == “power_boiler” )
|> difference()
|> aggregateWindow(every: ${Interval}, fn: sum)

Could this have anything to do with the daylight savings time change that occurs in March & Nov?

yes maybe, normaly i am using import “timezone” option location = timezone.location(name: "Europe/Berlin”) not as I posted America/Los_Angeles, but the behavior is the same. I tried it only with different time zones.

does anybody have an idea what can i try?