Menu items disappear when you change language

Hi

I have read this document and concluded that I have the problems described in there:
http://drupal.org/node/346112

The menu items disappear when you change language from danish to english.

The documents "solution" part only describes when building the menu (See the last section of this node), not what you are supposed to do if you HAVE done it wrong and want to correct it (hopefully without having to delete everything at first)...

Could anyone please help me out!??!?!???!??

Thanks a lot
/B

"Solution: This problem appears when you have created a node (e.g. a page, story or blog post) but you have not created a translated version of it and you have set the node to any particular language. To prevent this issue: when you create new content nodes, always set untranslated pages to Language Neutral (Normally, the Language setting appears above the body text area where you are typing in the new content). Do not change the node's language setting until you are ready to add a translated version of the node."