Best practice to Impprt AutoCAD to igniton

I try a some software to convert AutoCAD single line diagram of substation to svg like inkescape and then import them to igniton.
The problem is the svg result is not good and each line divivde to several object which make them dynamic very hard in igniton.
I want see help to know what is the best practical method to convert AutoCAD file to igniton for make them animated.