MinGW Utils Reimp not recognizing exported functions?

Question

C++ / C#

Hi, I'm trying to convert a .lib file made by MSVC to .a for MinGW.
I use the reimp utility from the MinGW utilities.
Unfortunately, it only recognizes exported functions, not types.
This is what he recognizes
_declspec(dllexport) void blabla();
But there is no renaming of types.
_declspec(dllexport) pointerclass pclass_bla_bla;
The type information is in .lib.
What to do? Thanks for the advice!