Imported .csv doesn't get removed from persistent resources

It looks like the imported .csv File gets deleted but not the record?

**Steps to reproduce**
- Import a CSV-File
- Run `./flow resource:clean`

```
Found 1 broken resource(s):
URL Redirects - after-neos-redirects.csv (d443ea2dfecb898aa9e83e67be52a64849804236) from "persistent" collection
```

