character '\''s escape value is not correctly in Karaf's dynamic configurations

[ext2]

Hi:
        Karaf support using Properties files to store dynamic
configurations. But it seems the escape value of '\' is not correctly. For
example: if I write such a properties:
        keyA=\\\\

The value of KeyA should be two '\' character. But karaf's configurations is
readed the value as a single '\' character.
        Why? Is it a bug?

Thanks a any suggestion;