[OpenSIPS-Users] Sometimes duration is negative when using db_flat

[Aqs Younas]

Greetings,

I am using db_flatstore to store cdrs and later on process them by some
external script. But I see sometimes duration and setuptime are in
negative.

Below is just an example of one record. Duration being negative.
INVITE|5X1Kv9cypr62B|as645142e8|fe050032-e538-1236-31be-02420a0f0704|200|OK|1528405376|0|1528405376
*|-1|1271309423*

Could someone please shed a light what might be the reason behind duration
in negative.
version: opensips 2.4.1 (x86_64/linux)

Best Regards,

Aqs
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