[TYPO3-calendar] ics export: categories

[Josef Oberniedermaier]

Hello list,

i´m using the ics-export option.
the download-links and files are created.
in the setup of the calendar plugin i have limited the displayed categories 
(filter: show only selected categories), but the related ics-file contains 
items of every category.
how to export only items of the selected categories to the ics-file?
thanks in advance.

Josef


cal base 1.4.3
typo3 4.5.17