obj to a3d conversion is almost certainly searched by users that are looking for tools that can be used to export 3D object files (.obj) to Amapi 3D format.
This might be incredible difficult today, considering Amapi software was discontinued in 2005 and its formats are not really supported that much in modern software. Thus your best option is to use some of the dedicated 3D model converters for this task.
Updated: October 5, 2023