Feedburner feeds or default feeds ?

Hi ! I own blogger blogs and I wonder if it would be possible to import the default feed because it seems to be the feedburner feed that is imported and the "result" is strange : There is the title of the posts and instead of the article content with it, there is the meta definition of the blogs !
I hope i'm clear with my explanation (I'm french)
Thanks for your help.
JaneAir