VC++6 link issue

I’m trying to build a vc++6 version to use with some older apps.
Minor code changes have everything compiling, the DOM and ext libs, but when I try to build the dll with the dae files, I get 901 errors from the DOMLIB. All references to dae items fail.
All builds have __cdecl export type, multithread libs, DOM_EXPORT and DOM_DYNAMIC.

But the DOMLIB can not see the code being compiled with the dll (the dae classes). How do these need to be exported so this will link?