[TYPO3] pmk_rssnewsexport feedItemLinkPrefix

[Lukas]

I use tt_news 2.4 and pmk_rssnewsexport 1.5.
tt_news appear to use and to be dependent on urls that ends with a cHash 
value like this:
http://www.antroposofi.info/startsida/nyheter/nyheter_visa_en/?tx_ttnews%5Btt_news%5D=68&tx_ttnews%5BbackPid%5D=361&cHash=87def88814
This clashes with the rss extension pmk_rssnewsexport that outputs urls 
with a numeric content id prefixed by a typoscript value called 
"feedItemLinkPrefix" (no cHashish)

Is there a way to either make pmk_rssnewsexport to output urls with 
cHash or to make tt_news to accept urls without cHash?

If I exclude the cHash from the tt_news url, I do only get the one of 
the oldest news (id zero I guess), whatever number I put in 
tx_ttnews[tt_news]