Rights problem? Different effect with manual and automatic import

Hi there,

it's about the simple importing of job offers from xml file.

When I run it manually ('Import all' in importer's options)
all goes great.

But when I leave it as an automatic Feeds' job (via Xpath
Parser) fields with on/off dates (for Scheduler) stay empty.

Why? Is there an rights conflict? How, when? :/ Help.

Thanks!

Szy.