Influxdb deletes too much

[genofire]

Config

[influxdb]
enable   = true
address  = "http://localhost:8086"
database = "ffhb"
username = ""
password = ""
# cleaning data of measurement node,
#   which are older than 7d
delete_after = "7d"
#   how often run the cleaning
delete_interval = "1h"

Version 016e2dc50d406fb130f2a7d8c8d513f05076ae7c

Description Influxdb lost more then all data after 7 days :( But this habben just on some nodes not on every one.