How to export the .dbseospider File?

I am running Screaming Frog in DB Mode with:
```
storage.mode=DB
storage.db_dir=/home/dbdir
```

I also use:
```
--save-crawl \
--output-folder /home/crawls \
```
for saving my crawl.

But it only export the normal .seospider File. 
How can I save the .dbseopsider File?