Problem with FTP filename in Bro 2.5.2

Hi,

I’m trying to upgrade Bro from 2.4.1 to 2.5.2.

I’ve managed to port all custom script to new Bro but one thing doesn’t work.

In Bro 2.4.2 file_cap.log for FTP traffic looks like this:
1510317723.341233 FTP_DATA application/x-zip Starting file extraction, file name=Test-01.zip, total_bytes=0

In Bro 2.5.2 file_cap.log looks like:
1510319840.650513 FTP_DATA application/x-zip Starting file extraction, file name=FTP_DATA-FF9XlZGkkngVBK1Z1.zip, total_bytes=0

Can someone point me in the right direction which variable changed in the meantime and how to fix this issue?

Thanks in advance